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XTERM(1)                        X Window System                       XTERM(1)

NAME
       xterm - terminal emulator for X

SYNOPSIS
       xterm [-toolkitoption ...] [-option ...] [shell]

DESCRIPTION
       The xterm program is a terminal emulator for the X Window System.  It
       provides DEC VT102/VT220 and selected features from higher-level
       terminals such as VT320/VT420/VT520 (VTxxx).  It also provides
       Tektronix 4014 emulation for programs that cannot use the window system
       directly.  If the underlying operating system supports terminal
       resizing capabilities (for example, the SIGWINCH signal in systems
       derived from 4.3BSD), xterm will use the facilities to notify programs
       running in the window whenever it is resized.

       The VTxxx and Tektronix 4014 terminals each have their own window so
       that you can edit text in one and look at graphics in the other at the
       same time.  To maintain the correct aspect ratio (height/width),
       Tektronix graphics will be restricted to the largest box with a 4014's
       aspect ratio that will fit in the window.  This box is located in the
       upper left area of the window.

       Although both windows may be displayed at the same time, one of them is
       considered the ?active? window for receiving keyboard input and
       terminal output.  This is the window that contains the text cursor.
       The active window can be chosen through escape sequences, the VT
       Options menu in the VTxxx window, and the Tek Options menu in the 4014
       window.

EMULATIONS
       Xterm provides usable emulations of related DEC terminals:

       ?   VT52 emulation is complete.

       ?   VT102 emulation is fairly complete, but does not support autorepeat
           (because that would affect the keyboard used by other X clients).

           Double-size  characters  are displayed properly if your font server
           supports scalable bitmap fonts.

       ?   VT220 emulation does  not  support  soft  fonts,  it  is  otherwise
           complete.

       ?   VT420  emulation  (the  default) supports controls for manipulating
           rectangles of characters as well as left/right margins.

           Xterm does not support some other features which are  not  suitable
           for emulation, e.g., two-sessions.

       Terminal  database (terminfo (5) or termcap (5)) entries that work with
       xterm include

              an optional platform-specific entry (?xterm?),
              ?xterm?,
              ?vt102?,
              ?vt100?,
              ?ansi? and
              ?dumb?

       Xterm automatically searches the terminal database in  this  order  for
       these  entries  and  then  sets  the ?TERM? variable (and the ?TERMCAP?
       environment variable on a few older systems).  The  alternatives  after
       ?xterm? are very old, from the late 1980s.

       VT100  and  VT102 emulations are commonly equated, though they actually
       differ.  The VT102 provided controls for inserting and deleting lines.

       Similarly, ?ansi? and ?vt100? are often equated.  These are not  really
       the same.  For instance, they use different controls for scrolling (but
       xterm  supports  both).   These  features  differ in an ?ansi? terminal
       description from xterm:

       acsc
               Pseudo-graphics (line-drawing) uses a different mapping.

       xenl
               Xterm wraps text at the right margin using the  VT100  ?newline
               glitch? behavior.

       Because  of  the  wrapping  behavior,  you  would  occasionally have to
       repaint  the  screen  when  using  a  text  editor  with   the   ?ansi?
       description.

       You  may  also  use descriptions corresponding to the various supported
       emulations such as ?vt220? or  ?vt420?, but  should  set  the  terminal
       emulation level with the decTerminalID resource.

       On  most  systems,  xterm  will  use the terminfo database.  Some older
       systems use termcap.  (The ?TERMCAP? environment variable is not set if
       xterm is  linked  against  a  terminfo  library,  since  the  requisite
       information  is  not  provided  by  the  termcap  emulation of terminfo
       libraries).

       Many of the special  xterm  features  may  be  modified  under  program
       control  through  a set of escape sequences different from the standard
       VTxxx escape sequences (see Xterm Control Sequences).

       The Tektronix 4014 emulation is also fairly good.  It  supports  12-bit
       graphics  addressing,  scaled  to the window size.  Four different font
       sizes and five different lines types are supported.  There is no write-
       through or defocused mode support.  The  Tektronix  text  and  graphics
       commands  are recorded internally by xterm and may be written to a file
       by sending the COPY escape sequence (or through the Tektronix menu; see
       below).  The name of the file will be

           ?COPYyyyy-MM-dd.hh:mm:ss?

       where yyyy, MM, dd, hh, mm and ss  are  the  year,  month,  day,  hour,
       minute  and  second when the COPY was performed (the file is created in
       the directory xterm is started in, or the home directory  for  a  login
       xterm).

       Not  all  of  the  features  described  in  this manual are necessarily
       available  in  this  version  of  xterm.   Some  (e.g.,  the  non-VT220
       extensions)  are  available  only  if they were compiled in, though the
       most commonly-used are in the default configuration.

OTHER FEATURES
       Xterm automatically highlights the text cursor when the pointer  enters
       the  window  (selected) and unhighlights it when the pointer leaves the
       window (unselected).  If the window is the focus window, then the  text
       cursor is highlighted no matter where the pointer is.

       In VTxxx mode, there are escape sequences to activate and deactivate an
       alternate  screen buffer, which is the same size as the display area of
       the window.  When activated, the current screen is saved  and  replaced
       with the alternate screen.  Saving of lines scrolled off the top of the
       window  is  disabled  until  the  normal screen is restored.  The usual
       terminal description for xterm allows the visual editor vi(1) to switch
       to the alternate screen for editing and to restore the screen on  exit.
       A  popup  menu  entry  makes it simple to switch between the normal and
       alternate screens for cut and paste.

       In either VTxxx or Tektronix mode, there are escape sequences to change
       the name of the windows.  Additionally, in VTxxx mode, xterm implements
       the window-manipulation control sequences from dtterm, such as resizing
       the window, setting its location on the screen.

       Xterm allows  character-based  applications  to  receive  mouse  events
       (currently  button-press  and release events, and button-motion events)
       as  keyboard  control  sequences.   See  Xterm  Control  Sequences  for
       details.

OPTIONS
       Because  xterm  uses  the  X Toolkit library, it accepts the standard X
       Toolkit command line options.  Xterm  also  accepts  many  application-
       specific options.

       By  convention,  if  an  option begins with a ?+? instead of a ?-?, the
       option is restored to its default value.

       Most of the xterm options are actually parsed by the X  Toolkit,  which
       sets  resource values, and overrides corresponding resource-settings in
       your X resource files.  Xterm provides the X Toolkit with  a  table  of
       options.   A  few  of these are marked, telling the X Toolkit to ignore
       them (-help, -version, -class, -e, and -into).  After the X Toolkit has
       parsed the command-line parameters, it removes those which it  handles,
       leaving the specially-marked parameters for xterm to handle.

       These options do not set a resource value, and are handled specially:

       -version
               This  causes  xterm  to  print a version number to the standard
               output, and then exit.

       -help   This causes xterm to print out a verbose message describing its
               options, one per line.  The message is written to the  standard
               output.   After  printing  the  message,  xterm  exits.   Xterm
               generates  this  message,  sorting  it  and  noting  whether  a
               ?-option?  or  a  ?+option?  turns the feature on or off, since
               some features historically have been one or the  other.   Xterm
               generates  a  concise  help message (multiple options per line)
               when an unknown option is used, e.g.,

                   xterm -z

               If the logic for a particular option such  as  logging  is  not
               compiled  into xterm, the help text for that option also is not
               displayed by the -help option.

       The -version and -help options are interpreted  even  if  xterm  cannot
       open the display, and are useful for testing and configuration scripts.
       Along  with -class, they are checked before other options.  To do this,
       xterm has its own (much simpler) argument parser, along with a table of
       the X Toolkit's built-in list of options.

       Relying upon the X Toolkit to parse the options and  associated  values
       has  the  advantages  of  simplicity  and  good  integration with the X
       resource mechanism.  There are a few drawbacks

       ?   Xterm cannot tell easily whether a resource value was set by one of
           the external resource- or application-defaults  files,  whether  it
           was  set using xrdb(1), or if it was set through the -xrm option or
           via some directly relevant command-line option.   Xterm  sees  only
           the end-result: a value supplied when creating its widgets.

       ?   Xterm does not know the order in which particular options and items
           in resource files are evaluated.  Rather, it sees all of the values
           for  a  given  widget  at  the  same  time.  In the design of these
           options, some are deemed more important,  and  can  override  other
           options.

           The  X  Toolkit  uses  patterns  (constants and wildcards) to match
           resources.  Once a particular pattern has been used,  it  will  not
           modify  it.   To  override a given setting, a more-specific pattern
           must be used, e.g., replacing ?*? with ?.?.   Some  poorly-designed
           resource  files  are too specific to allow the command-line options
           to affect the relevant widget values.

       ?   In a few cases, the X Toolkit combines its standard options in ways
           which do not work well with xterm.  This  happens  with  the  color
           (-fg,  -bg)  and reverse (-rv) options.  Xterm makes a special case
           of these  and  adjusts  its  sense  of  ?reverse?  to  lessen  user
           surprise.

       One parameter (after all options) may be given.  That overrides xterm's
       built-in choice of shell program:

       ?   If  the parameter is not a relative path, i.e., beginning with ?./?
           or ?../?, xterm looks for the file in the user's PATH.   In  either
           case, this check fails if xterm cannot construct an absolute path.

       ?   If  that check fails (or if no such parameter is given), xterm next
           checks the ?SHELL? variable.  If that specifies an executable file,
           xterm will attempt to  start  that.   However,  xterm  additionally
           checks if it is a valid shell, and will unset ?SHELL? if it is not.

       ?   If ?SHELL? is not set to an executable file, xterm tries to use the
           shell  program  specified  in  the  user's password file entry.  As
           before, xterm verifies if this is a valid shell.

       ?   Finally, if the password file entry does not specify a valid shell,
           xterm uses /bin/sh.

       The -e option cannot be used with this  parameter  since  it  uses  all
       parameters following the option.

       Xterm  validates  shell  programs by finding their pathname in the text
       file /etc/shells.  It treats the environment variable ?SHELL? specially
       because (like ?TERM?), xterm both reads and updates the  variable,  and
       because the program started by xterm is not necessarily a shell.

       The other options are used to control the appearance and behavior.  Not
       all options are necessarily configured into your copy of xterm:

       -132    Normally,  the  VT102  DECCOLM  escape  sequence  that switches
               between 80 and 132 column mode is ignored.  This option  causes
               the  DECCOLM  escape  sequence  to be recognized, and the xterm
               window will resize appropriately.

       -ah     This option indicates that xterm should  always  highlight  the
               text  cursor.   By  default,  xterm  will display a hollow text
               cursor whenever the focus is lost or  the  pointer  leaves  the
               window.

       +ah     This   option  indicates  that  xterm  should  do  text  cursor
               highlighting based on focus.

       -ai     This option disables active icon support if  that  feature  was
               compiled  into  xterm.  This is equivalent to setting the vt100
               resource activeIcon to ?false?.

       +ai     This option enables active icon support  if  that  feature  was
               compiled  into  xterm.  This is equivalent to setting the vt100
               resource activeIcon to ?true?.

       -aw     This option indicates that auto-wraparound should  be  allowed,
               and  is  equivalent  to  setting the vt100 resource autoWrap to
               ?true?.

               Auto-wraparound allows the cursor to automatically wrap to  the
               beginning of the next line when it is at the rightmost position
               of a line and text is output.

       +aw     This  option  indicates  that  auto-wraparound  should  not  be
               allowed, and  is  equivalent  to  setting  the  vt100  resource
               autoWrap to ?false?.

       -b number
               This  option  specifies  the  size  of  the  inner  border (the
               distance between the outer  edge  of  the  characters  and  the
               window  border)  in  pixels.   That is the vt100 internalBorder
               resource.  The default is ?2?.

       -barc   This option, corresponding to the cursorBar resource, makes the
               cursor a bar instead of a box.

       +barc   This option, corresponding to the cursorBar resource, makes the
               cursor a box instead of a bar.

       -baudrate number
               Set the line-speed, used to test the behavior  of  applications
               that  use  the  line-speed  when optimizing their output to the
               screen.  The default is ?38400?.

       -bc     turn on text cursor blinking.  This overrides  the  cursorBlink
               resource.

       +bc     turn  off text cursor blinking.  This overrides the cursorBlink
               resource.

       -bcf milliseconds
               set the amount of time text cursor is off when blinking via the
               cursorOffTime resource.

       -bcn milliseconds
               set the amount of time text cursor is on when blinking via  the
               cursorOnTime resource.

       -bdc    Set  the  vt100  resource colorBDMode to ?false?, disabling the
               display of characters with bold attribute as color.

       +bdc    Set the vt100 resource  colorBDMode  to  ?true?,  enabling  the
               display  of characters with bold attribute as color rather than
               bold.

       -cb     Set the vt100 resource cutToBeginningOfLine to ?false?.

       +cb     Set the vt100 resource cutToBeginningOfLine to ?true?.

       -cc characterclassrange:value[, ...]
               This sets classes indicated by the given ranges  for  using  in
               selecting  by  words  (see  CHARACTER CLASSES and the charClass
               resource).

       -cjk_width
               Set  the  cjkWidth  resource  to  ?true?.   When   turned   on,
               characters  with  East  Asian  Ambiguous (A) category in UTR 11
               have a column width of 2.  Otherwise, they have a column  width
               of  1.   This  may be useful for some legacy CJK text terminal-
               based programs assuming box  drawings  and  others  to  have  a
               column  width  of  2.   It  also  should  be turned on when you
               specify a TrueType CJK double-width  (bi-width/monospace)  font
               either  with -fa at the command line or faceName resource.  The
               default is ?false?

       +cjk_width
               Reset the cjkWidth resource.

       -class string
               This option allows you  to  override  xterm's  resource  class.
               Normally it is ?XTerm?, but can be set to another class such as
               ?UXTerm? to override selected resources.

               X  Toolkit  sets  the WM_CLASS property using the instance name
               and this class value.

       -cm     This option disables recognition of  ANSI  color-change  escape
               sequences.  It sets the colorMode resource to ?false?.

       +cm     This  option  enables  recognition  of ANSI color-change escape
               sequences.  This is the same as the vt100 resource colorMode.

       -cn     This option indicates that newlines should not be cut in  line-
               mode selections.  It sets the cutNewline resource to ?false?.

       +cn     This  option indicates that newlines should be cut in line-mode
               selections.  It sets the cutNewline resource to ?true?.

       -cr color
               This option specifies the color to use for  text  cursor.   The
               default  is  to  use the same foreground color that is used for
               text.  It  sets  the  cursorColor  resource  according  to  the
               parameter.

       -cu     This  option  indicates  that xterm should work around a bug in
               the more(1) program that causes it to incorrectly display lines
               that are exactly the width of the window and are followed by  a
               line beginning with a tab (the leading tabs are not displayed).
               This option is so named because it was originally thought to be
               a bug in the curses(3x) cursor motion package.

       +cu     This  option  indicates  that  xterm should not work around the
               more(1) bug mentioned above.

       -dc     This option disables the  escape  sequence  to  change  dynamic
               colors:  the  vt100  foreground and background colors, its text
               cursor color, the  pointer  cursor  foreground  and  background
               colors,   the  Tektronix  emulator  foreground  and  background
               colors, its text cursor color and highlight color.  The  option
               sets the dynamicColors option to ?false?.

       +dc     This  option  enables  the  escape  sequence  to change dynamic
               colors.  The option sets the dynamicColors option to ?true?.

       -e program [ arguments ... ]
               This  option  specifies  the  program  (and  its  command  line
               arguments)  to  be  run  in the xterm window.  It also sets the
               window title and icon name to be the basename  of  the  program
               being  executed  if  neither -T nor -n are given on the command
               line.

               NOTE: This must be the last option on the command line.

       -en encoding
               This option determines the encoding on which  xterm  runs.   It
               sets  the  locale  resource.   Encodings  other  than UTF-8 are
               supported by using luit.  The -lc option should be used instead
               of -en for systems with locale support.

       -fa pattern
               This option sets  the  pattern  for  fonts  selected  from  the
               FreeType  library if support for that library was compiled into
               xterm.  This corresponds to the faceName resource.  When a  CJK
               double-width  font  is  specified, you also need to turn on the
               cjkWidth resource.

               If you specify both -fa and the X Toolkit option -fn,  the  -fa
               setting overrides the latter.

               See  also  the renderFont resource, which combines with this to
               determine whether FreeType fonts are initially active.

       -fb font
               This option specifies a font to be used  when  displaying  bold
               text.  It sets the boldFont resource.

               This font must be the same height and width as the normal font,
               otherwise  it  is  ignored.   If only one of the normal or bold
               fonts is specified, it will be used as the normal font and  the
               bold font will be produced by overstriking this font.

               See   also   the  discussion  of  boldMode  and  alwaysBoldMode
               resources.

       -fbb    This option indicates that xterm should compare normal and bold
               fonts bounding boxes to ensure they are  compatible.   It  sets
               the freeBoldBox resource to ?false?.

       +fbb    This  option indicates that xterm should not compare normal and
               bold fonts bounding boxes to ensure they  are  compatible.   It
               sets the freeBoldBox resource to ?true?.

       -fbx    This  option  indicates  that  xterm should not assume that the
               normal and bold fonts have VT100 line-drawing  characters.   If
               any  are  missing, xterm will draw the characters directly.  It
               sets the forceBoxChars resource to ?false?.

       +fbx    This option indicates that xterm should assume that the  normal
               and bold fonts have VT100 line-drawing characters.  It sets the
               forceBoxChars resource to ?true?.

       -fc fontchoice
               Specify the initial font chosen from the font menu.  The option
               value corresponds to the initialFont resource.

       -fd pattern
               This  option  sets  the pattern for double-width fonts selected
               from the FreeType library  if  support  for  that  library  was
               compiled    into    xterm.     This    corresponds    to    the
               faceNameDoublesize resource.

       -fi font
               This option sets the font for active icons if that feature  was
               compiled into xterm.

               See also the discussion of the iconFont resource.

       -fs size
               This  option  sets  the  pointsize  for fonts selected from the
               FreeType library if support for that library was compiled  into
               xterm.  This corresponds to the faceSize resource.

       -fullscreen
               This  option indicates that xterm should ask the window manager
               to let it use the full-screen for display, e.g., without window
               decorations.  It sets the fullscreen resource to ?true?.

       +fullscreen
               This option indicates that xterm  should  not  ask  the  window
               manager to let it use the full-screen for display.  It sets the
               fullscreen resource to ?false?.

       -fw font
               This  option  specifies the font to be used for displaying wide
               text.  By default, it will attempt to use a font twice as  wide
               as  the  font  that  will  be  used to draw normal text.  If no
               double-width font is found, it will  improvise,  by  stretching
               the normal font.  This corresponds to the wideFont resource.

       -fwb font
               This  option  specifies the font to be used for displaying bold
               wide text.  By default, it will attempt to use a font twice  as
               wide  as  the  font that will be used to draw bold text.  If no
               double-width font is found, it will  improvise,  by  stretching
               the bold font.  This corresponds to the wideBoldFont resource.

       -fx font
               This  option  specifies  the font to be used for displaying the
               preedit string in the ?OverTheSpot? input method.

               See also the discussion of the ximFont resource.

       -hc color
               (see -selbg).

       -hf     This option indicates that HP function key escape codes  should
               be  generated  for  function  keys.  It sets the hpFunctionKeys
               resource to ?true?.

       +hf     This option indicates that HP function key escape codes  should
               not be generated for function keys.  It sets the hpFunctionKeys
               resource to ?false?.

       -hm     Tells  xterm  to  use  highlightTextColor and highlightColor to
               override  the  reversed  foreground/background  colors   in   a
               selection.  It sets the highlightColorMode resource to ?true?.

       +hm     Tells xterm not to use highlightTextColor and highlightColor to
               override   the   reversed  foreground/background  colors  in  a
               selection.  It sets the highlightColorMode resource to ?false?.

       -hold   Turn on the hold resource, i.e.,  xterm  will  not  immediately
               destroy  its  window when the shell command completes.  It will
               wait until you use  the  window  manager  to  destroy/kill  the
               window,  or  if  you  use  the menu entries that send a signal,
               e.g., HUP or KILL.

       +hold   Turn off  the  hold  resource,  i.e.,  xterm  will  immediately
               destroy its window when the shell command completes.

       -ie     Turn  on  the  ptyInitialErase  resource, i.e., use the pseudo-
               terminal's sense of the stty(1) erase value.

       +ie     Turn off the ptyInitialErase resource, i.e., set the stty erase
               value  using  the  kb  string  from  the  termcap  entry  as  a
               reference, if available.

       -im     Turn  on the useInsertMode resource, which forces use of insert
               mode by adding appropriate entries to the  TERMCAP  environment
               variable.   (This  option  is  ignored on most systems, because
               TERMCAP is not used).

       +im     Turn off the useInsertMode resource.

       -into windowId
               Given  an  X  window  identifier  (an  integer,  which  can  be
               hexadecimal,  octal  or  decimal according to whether it begins
               with "0x", "0" or neither), xterm will reparent  its  top-level
               shell  widget  to  that  window.   This  is used to embed xterm
               within other applications.

               For instance, there are scripts for Tcl/Tk and Gtk which can be
               used to demonstrate the feature.  When using Gtk,  there  is  a
               limitation   of   that  toolkit  which  requires  that  xterm's
               allowSendEvents resource is enabled.

       -itc    Set the vt100 resource colorITMode to  ?false?,  disabling  the
               display of characters with italic attribute as color.

       +itc    Set  the  vt100  resource  colorITMode  to ?true?, enabling the
               display of characters with italic  attribute  as  color  rather
               than italic.

       -j      This  option indicates that xterm should do jump scrolling.  It
               corresponds to the  jumpScroll  resource.   Normally,  text  is
               scrolled  one  line at a time; this option allows xterm to move
               multiple lines at a time so  that  it  does  not  fall  as  far
               behind.   Its  use is strongly recommended since it makes xterm
               much faster when scanning through large amounts of  text.   The
               VT100 escape sequences for enabling and disabling smooth scroll
               as well as the VT Options menu can be used to turn this feature
               on or off.

       +j      This option indicates that xterm should not do jump scrolling.

       -jf     When  doing  jump-scrolling or related indexing, e.g., carriage
               returns, xterm will defer flushing screen-updates,  to  improve
               speed.  This corresponds to the fastScroll resource.

       +jf     When  doing  jump-scrolling or related indexing, e.g., carriage
               returns, xterm  will  not  defer  flushing  screen-updates,  to
               improve speed.  This corresponds to the fastScroll resource.

       -k8     This   option   sets   the   allowC1Printable  resource.   When
               allowC1Printable is set, xterm  overrides  the  mapping  of  C1
               control characters (code 128?159) to treat them as printable.

       +k8     This option resets the allowC1Printable resource.

       -kt keyboardtype
               This  option  sets  the keyboardType resource.  Possible values
               include: ?unknown?, ?default?, ?legacy?,  ?hp?,  ?sco?,  ?sun?,
               ?tcap? and ?vt220?.

               The  value  ?unknown?,  causes the corresponding resource to be
               ignored.

               The value ?default?, suppresses the associated resources

               hpFunctionKeys,
               scoFunctionKeys,
               sunFunctionKeys,
               tcapFunctionKeys,
               oldXtermFKeys and
               sunKeyboard,

               using the Sun/PC keyboard layout.

       -l      Turn logging on, unless disabled by the logInhibit resource.

               Some versions of xterm  may  have  logging  enabled.   However,
               normally  logging is not supported, due to security concerns in
               the early 1990s.  That was a  problem  in  X11R4  xterm  (1989)
               which  was  addressed  by a patch to X11R5 late in 1993.  X11R6
               included these fixes.  The older  version  (when  running  with
               root privilege) would create the log file using root privilege.
               The  reason  why  xterm  ran  with  root privileges was to open
               pseudo-terminals.  Those privileges are now needed only on very
               old  systems:  Unix98  pseudo-terminals  made  the  BSD  scheme
               unnecessary.

               Unless overridden by the -lf option or the logFile resource:

               ?   If  the  filename  is  ?-?,  then  logging  is  sent to the
                   standard output.

               ?   Otherwise a filename is generated,  and  the  log  file  is
                   written to the directory from which xterm is invoked.

               ?   The generated filename is of the form

                       XtermLog.XXXXXX

                   or

                       Xterm.log.hostname.yyyy.mm.dd.hh.mm.ss.XXXXXX

                   depending on how xterm was built.

       +l      Turn logging off.

       -lc     Turn  on  support  of various encodings according to the users'
               locale setting, i.e., LC_ALL,  LC_CTYPE,  or  LANG  environment
               variables.   This  is  achieved by turning on UTF-8 mode and by
               invoking luit  for  conversion  between  locale  encodings  and
               UTF-8.    (luit   is  not  invoked  in  UTF-8  locales.)   This
               corresponds to the locale resource.

               The actual list of encodings which are supported is  determined
               by luit.  Consult the luit manual page for further details.

               See  also the discussion of the -u8 option which supports UTF-8
               locales.

       +lc     Turn off support of automatic selection  of  locale  encodings.
               Conventional 8bit mode or, in UTF-8 locales or with -u8 option,
               UTF-8 mode will be used.

       -lcc path
               File  name  for the encoding converter from/to locale encodings
               and UTF-8 which is used with -lc  option  or  locale  resource.
               This corresponds to the localeFilter resource.

       -leftbar
               Force  scrollbar to the left side of VT100 screen.  This is the
               default, unless you have set the rightScrollBar resource.

       -lf filename
               Specify the log filename.  This sets the logFile resource.   If
               set  to  ?-?, xterm writes its log to the standard output.  See
               the -l option.

       -ls     This option indicates that the shell that  is  started  in  the
               xterm  window  will be a login shell (i.e., the first character
               of argv[0] will be a dash, indicating  to  the  shell  that  it
               should read the user's .login or .profile).

               The  -ls  flag and the loginShell resource are ignored if -e is
               also given, because xterm does not know how to make  the  shell
               start  the  given  command  after whatever it does when it is a
               login shell - the user's shell of choice need not be  a  Bourne
               shell  after  all.   Also,  xterm -e  is  supposed to provide a
               consistent functionality for other applications  that  need  to
               start  text-mode  programs  in a window, and if loginShell were
               not ignored, the result  of  ~/.profile  might  interfere  with
               that.

               If you do want the effect of -ls and -e simultaneously, you may
               get away with something like

                   xterm -e /bin/bash -l -c "my command here"

               Finally,  -ls  is  not completely ignored, because xterm -ls -e
               does write a wtmp entry  (if  configured  to  do  so),  whereas
               xterm -e does not.

       +ls     This option indicates that the shell that is started should not
               be a login shell (i.e., it will be a normal ?subshell?).

       -maximized
               This  option indicates that xterm should ask the window manager
               to maximize its layout on startup.   This  corresponds  to  the
               maximized resource.

               Maximizing  is not the reverse of iconifying; it is possible to
               do both with certain window managers.

       +maximized
               This option indicates that xterm should ask the window  manager
               to not maximize its layout on startup.

       -mb     This option indicates that xterm should ring a margin bell when
               the user types near the right end of a line.

       +mb     This option indicates that margin bell should not be rung.

       -mc milliseconds
               This  option  specifies  the  maximum  time between multi-click
               selections.

       -mesg   Turn off the messages resource, i.e., disallow write access  to
               the terminal.

       +mesg   Turn  on the messages resource, i.e., allow write access to the
               terminal.

       -mk_width
               Set the mkWidth resource to ?true?.  This  makes  xterm  use  a
               built-in  version of the wide-character width calculation.  The
               default is ?false?

       +mk_width
               Reset the mkWidth resource.

       -ms color
               This option specifies the color to  be  used  for  the  pointer
               cursor.  The default is to use the foreground color.  This sets
               the pointerColor resource.

       -nb number
               This  option  specifies the number of characters from the right
               end of a line at which the margin bell, if enabled, will  ring.
               The default is ?10?.

       -nul    This option disables the display of underlining.

       +nul    This option enables the display of underlining.

       -pc     This  option  enables  the  PC-style  use  of  bold colors (see
               boldColors resource).

       +pc     This option disables the PC-style use of bold colors.

       -pf font
               This option specifies the font to be used for the pointer.  The
               corresponding resource name is pointerFont.  The resource value
               default is cursor.

       -pob    This option indicates that the window should be raised whenever
               a Control-G is received.

       +pob    This option indicates that the  window  should  not  be  raised
               whenever a Control-G is received.

       -report-charclass
               Print a report to the standard output showing information about
               the  character-classes which can be altered using the charClass
               resource.

       -report-colors
               Print a report to the standard output showing information about
               colors as  xterm  allocates  them.   This  corresponds  to  the
               reportColors resource.

       -report-fonts
               Print a report to the standard output showing information about
               fonts  which  are  loaded.  This corresponds to the reportFonts
               resource.

       -report-icons
               Print a report to the standard output showing information about
               pixmap-icons  which  are  loaded.   This  corresponds  to   the
               reportIcons resource.

       -report-xres
               Print  a  report  to  the standard output showing the values of
               boolean, numeric or string X resources  for  the  VT100  widget
               when  initialization  is  complete.   This  corresponds  to the
               reportXRes resource.

       -rightbar
               Force scrollbar to the right side of VT100 screen.

       -rvc    This option disables the display  of  characters  with  reverse
               attribute as color.

       +rvc    This  option  enables  the  display  of characters with reverse
               attribute as color.

       -rw     This  option  indicates  that  reverse-wraparound   should   be
               allowed.   This  allows the cursor to back up from the leftmost
               column of one line to the  rightmost  column  of  the  previous
               line.  This is very useful for editing long shell command lines
               and  is  encouraged.  This option can be turned on and off from
               the VT Options menu.

       +rw     This option indicates that  reverse-wraparound  should  not  be
               allowed.

       -s      This  option  indicates  that  xterm may scroll asynchronously,
               meaning that the screen does not have to be kept completely  up
               to  date while scrolling.  This allows xterm to run faster when
               network latencies are very high and is  typically  useful  when
               running across a very large internet or many gateways.

       +s      This option indicates that xterm should scroll synchronously.

       -samename
               Does  not  send  title  and  icon name change requests when the
               request would have no effect: the name is  not  changed.   This
               has the advantage of preventing flicker and the disadvantage of
               requiring  an  extra  round  trip to the server to find out the
               previous value.  In practice this should never be a problem.

       +samename
               Always send title and icon name change requests.

       -sb     This option indicates  that  some  number  of  lines  that  are
               scrolled  off  the top of the window should be saved and that a
               scrollbar should be  displayed  so  that  those  lines  can  be
               viewed.   This  option  may  be  turned  on and off from the VT
               Options menu.

       +sb     This option indicates that a scrollbar should not be displayed.

       -selbg color
               This option specifies the color to use for  the  background  of
               selected  text.   If not specified, reverse video is used.  See
               the discussion of the highlightColor resource.

       -selfg color
               This option specifies the color to use for selected  text.   If
               not  specified,  reverse  video is used.  See the discussion of
               the highlightTextColor resource.

       -sf     This option indicates that Sun function key escape codes should
               be generated for function keys.

       +sf     This option indicates that the standard escape codes should  be
               generated for function keys.

       -sh number
               scale   line-height  values  by  the  given  number.   See  the
               discussion of the scaleHeight resource.

       -si     This option indicates  that  output  to  a  window  should  not
               automatically  reposition  the  screen  to  the  bottom  of the
               scrolling region.  This option can be turned on  and  off  from
               the VT Options menu.

       +si     This  option  indicates that output to a window should cause it
               to scroll to the bottom.

       -sk     This option indicates that  pressing  a  key  while  using  the
               scrollbar  to  review  previous  lines of text should cause the
               window to be repositioned automatically in the normal  position
               at the bottom of the scroll region.

       +sk     This  option  indicates  that  pressing  a  key while using the
               scrollbar should not cause the window to be repositioned.

       -sl number
               This option specifies the number of lines  to  save  that  have
               been  scrolled  off the top of the screen.  This corresponds to
               the saveLines resource.  The default is ?1024?.

       -sm     This  option,  corresponding  to   the   sessionMgt   resource,
               indicates that xterm should set up session manager callbacks.

       +sm     This  option  indicates  that  xterm  should not set up session
               manager callbacks.

       -sp     This option indicates that Sun/PC keyboard should  be  assumed,
               providing  mapping  for  keypad ?+? to ?,?, and CTRL-F1 to F13,
               CTRL-F2 to F14, etc.

       +sp     This option indicates that the standard escape codes should  be
               generated for keypad and function keys.

       -t      This  option  indicates  that  xterm  should start in Tektronix
               mode, rather than in VTxxx mode.   Switching  between  the  two
               windows is done using the ?Options? menus.

               Terminal  database  (terminfo  (5) or termcap (5)) entries that
               work with xterm are:

               ?tek4014?,
               ?tek4015?,
               ?tek4012?,
               ?tek4013?,
               ?tek4010?, and
               ?dumb?.

               Xterm automatically searches  the  terminal  database  in  this
               order  for these entries and then sets the ?TERM? variable (and
               the ?TERMCAP? environment variable, if relevant).

       +t      This option indicates that xterm should start in VTxxx mode.

       -tb     This option, corresponding to the toolBar  resource,  indicates
               that  xterm should display a toolbar (or menubar) at the top of
               its window.  The buttons in the toolbar correspond to the popup
               menus, e.g., control/left/mouse for Main Options.

       +tb     This option indicates that xterm should not set up a toolbar.

       -ti term_id
               Specify the name used by xterm to select the  correct  response
               to terminal ID queries.  It also specifies the emulation level,
               used  to  determine  the  type  of  response  to  a  DA control
               sequence.  Valid values  include  vt52,  vt100,  vt101,  vt102,
               vt220,  and  vt240  (the  ?vt?  is  optional).   The default is
               ?vt420?.  The term_id argument specifies  the  terminal  ID  to
               use.  (This is the same as the decTerminalID resource).

       -tm string
               This  option  specifies  a  series of terminal setting keywords
               followed by the  characters  that  should  be  bound  to  those
               functions,  similar  to  the stty(1) program.  The keywords and
               their values are described in detail in the ttyModes resource.

       -tn name
               This option specifies the name of the terminal type to  be  set
               in  the  TERM  environment  variable.   It  corresponds  to the
               termName resource.   This  terminal  type  must  exist  in  the
               terminal  database (termcap or terminfo, depending on how xterm
               is built) and should have li# and co# entries.  If the terminal
               type is not  found,  xterm  uses  the  built-in  list  ?xterm?,
               ?vt102?, etc.

       -u8     This  option  sets  the utf8 resource.  When utf8 is set, xterm
               interprets incoming data as UTF-8.   This  sets  the  wideChars
               resource  as  a  side-effect,  but  the  UTF-8 mode set by this
               option prevents it from being turned off.   If  you  must  turn
               UTF-8   encoding  on  and  off,  use  the  -wc  option  or  the
               corresponding wideChars resource, rather than the -u8 option.

               This option and the utf8 resource are overridden by the -lc and
               -en options and locale resource.  That is, if  xterm  has  been
               compiled  to  support  luit,  and  the  locale  resource is not
               ?false? this option is ignored.  We  recommend  using  the  -lc
               option  or  the  ?locale: true?  resource in UTF-8 locales when
               your operating system supports locale, or -en UTF-8  option  or
               the  ?locale: UTF-8?  resource  when your operating system does
               not support locale.

       +u8     This option resets the utf8 resource.

       -uc     This option, corresponding  to  the  cursorUnderline  resource,
               makes the cursor underlined instead of a box.

       +uc     This  option  m, corresponding to the cursorUnderline resource,
               akes the cursor a box instead of underlined.

       -ulc    This option disables the display of characters  with  underline
               attribute as color rather than with underlining.

       +ulc    This  option  enables  the display of characters with underline
               attribute as color rather than with underlining.

       -ulit   This  option,  corresponding  to  the  italicULMode   resource,
               disables  the display of characters with underline attribute as
               italics rather than with underlining.

       +ulit   This  option,  corresponding  to  the  italicULMode   resource,
               enables  the  display of characters with underline attribute as
               italics rather than with underlining.

       -ut     This option indicates that xterm should not write a record into
               the system utmp log file.

       +ut     This option indicates that xterm should write a record into the
               system utmp log file.

       -vb     This option indicates that a visual bell is preferred  over  an
               audible  one.   Instead of ringing the terminal bell whenever a
               Control-G is received, the window will be flashed.

       +vb     This option indicates that a visual bell should not be used.

       -wc     This option sets the wideChars resource.

               When wideChars is set, xterm maintains internal structures  for
               16-bit  characters.   If xterm is not started in UTF-8 mode (or
               if this resource is not  set),  initially  it  maintains  those
               structures  to  support  8-bit  characters.  Xterm can later be
               switched, using a menu entry or control sequence, causing it to
               reallocate those structures to support 16-bit characters.

               The default is ?false?.

       +wc     This option resets the wideChars resource.

       -wf     This option indicates that xterm should wait for the window  to
               be mapped the first time before starting the subprocess so that
               the  initial  terminal  size settings and environment variables
               are correct.  It is the application's responsibility  to  catch
               subsequent terminal size changes.

       +wf     This  option  indicates  that  xterm  should  not  wait  before
               starting the subprocess.

       -ziconbeep percent
               Same as zIconBeep resource.  If  percent  is  non-zero,  xterms
               that  produce  output while iconified will cause an XBell sound
               at the given volume and have  ?***?  prepended  to  their  icon
               titles.    Most   window   managers  will  detect  this  change
               immediately, showing you  which  window  has  the  output.   (A
               similar feature was in x10 xterm.)

       -C      This  option  indicates that this window should receive console
               output.  This is not  supported  on  all  systems.   To  obtain
               console  output,  you  must be the owner of the console device,
               and you must have read and write permission for it.  If you are
               running X under xdm on the console screen you may need to  have
               the  session  startup  and reset programs explicitly change the
               ownership of the console device in order to get this option  to
               work.

       -Sccn   This  option  allows  xterm  to  be used as an input and output
               channel for an  existing  program  and  is  sometimes  used  in
               specialized  applications.  The option value specifies the last
               few letters of the name of a pseudo-terminal to  use  in  slave
               mode, plus the number of the inherited file descriptor.  If the
               option  contains  a ?/? character, that delimits the characters
               used for the pseudo-terminal name  from  the  file  descriptor.
               Otherwise,  exactly two characters are used from the option for
               the pseudo-terminal name, the remainder is the file descriptor.
               Examples (the first two are  equivalent  since  the  descriptor
               follows the last ?/?):

                   -S/dev/pts/123/45
                   -S123/45
                   -Sab34

               Note that xterm does not close any file descriptor which it did
               not  open for its own use.  It is possible (though probably not
               portable) to have an application  which  passes  an  open  file
               descriptor  down  to  xterm  past  the initialization or the -S
               option to a process running in the xterm.

   Old Options
       The following command line arguments  are  provided  for  compatibility
       with  older versions.  They may not be supported in the next release as
       the X Toolkit provides standard options that accomplish the same task.

       %geom   This option specifies the preferred size and  position  of  the
               Tektronix   window.    It   is  shorthand  for  specifying  the
               ?tekGeometry? resource.

       #geom   This option  specifies  the  preferred  position  of  the  icon
               window.   It  is  shorthand  for  specifying the ?iconGeometry?
               resource.

       -T string
               This option specifies the title for  xterm's  windows.   It  is
               equivalent to -title.

       -n string
               This option specifies the icon name for xterm's windows.  It is
               shorthand  for  specifying  the ?iconName? resource.  Note that
               this is not the same  as  the  X  Toolkit  option  -name.   The
               default icon name is the application name.

               If  no  suitable  icon  is  found, xterm provides a compiled-in
               pixmap.

               X Toolkit sets the WM_ICON_NAME property using this value.

       -r      This option indicates that reverse video should be simulated by
               swapping  the  foreground  and  background   colors.    It   is
               equivalent to -rv.

       -w number
               This  option  specifies  the  width  in  pixels  of  the border
               surrounding the window.  It is equivalent  to  -borderwidth  or
               -bw.

   X Toolkit Options
       The  following  standard  X Toolkit command line arguments are commonly
       used with xterm:

       -bd color
               This option specifies the color to use for the  border  of  the
               window.  The corresponding resource name is borderColor.  Xterm
               uses the X Toolkit default, which is ?XtDefaultForeground?.

               Xterm's   VT100  window  has  two  borders:  the  inner  border
               internalBorder and the outer border borderWidth, managed by the
               X Toolkit.

               Normally xterm fills the inner border using the VT100  window's
               background color.  If the colorInnerBorder resource is enabled,
               then  xterm  may  fill  the  inner border using the borderColor
               resource.

       -bg color
               This option specifies the color to use for  the  background  of
               the  window.   The  corresponding  resource name is background.
               The default is ?XtDefaultBackground?.

       -bw number
               This option  specifies  the  width  in  pixels  of  the  border
               surrounding the window.

               This  appears  to be a legacy of older X releases.  It sets the
               borderWidth resource of  the  shell  widget,  and  may  provide
               advice  to  your  window  manager  to  set the thickness of the
               window  frame.   Most  window  managers   do   not   use   this
               information.   See  the  -b  option,  which  controls the inner
               border of the xterm window.

       -display display
               This option specifies the X server to contact; see X(7).

       -fg color
               This option specifies the color to  use  for  displaying  text.
               The  corresponding resource name is foreground.  The default is
               ?XtDefaultForeground?.

       -fn font
               This option specifies the font to be used for displaying normal
               text.  The corresponding resource name is font.   The  resource
               value default is fixed.

               Xterm's -fn option accepts a comma-separated list like -fa, for
               the  VT100  widget, using the first bitmap font (and discarding
               additional  fonts).   However,  other  widgets  (such  as   the
               toolbar) will be confused by this and give a warning.

       -font font
               This is the same as -fn.

       -geometry geometry
               This  option  specifies  the preferred size and position of the
               VTxxx window; see X(7).

               The normal  geometry  specification  can  be  suffixed  with  @
               followed by a Xinerama screen specification; it can be either g
               for  the global screen (default), c for the current screen or a
               screen number.

       -iconic
               This option indicates that xterm should ask the window  manager
               to  start  it as an icon rather than as the normal window.  The
               corresponding resource name is iconic.

       -name name
               This  option  specifies  the  application  name   under   which
               resources   are   to  be  obtained,  rather  than  the  default
               executable file name.  Name  should  not  contain  ?.?  or  ?*?
               characters.

       -rv     This option indicates that reverse video should be simulated by
               swapping   the   foreground   and   background   colors.    The
               corresponding resource name is reverseVideo.

       +rv     Disable the simulation of reverse video by swapping  foreground
               and background colors.

       -title string
               This  option  specifies  the  window title string, which may be
               displayed by window managers if the user  so  chooses.   It  is
               shorthand  for  specifying  the  ?title? resource.  The default
               title is the command line specified after  the  -e  option,  if
               any, otherwise the application name.

               X Toolkit sets the WM_NAME property using this value.

       -xrm resourcestring
               This  option  specifies  a resource string to be used.  This is
               especially useful  for  setting  resources  that  do  not  have
               separate command line options.

       X Toolkit accepts alternate names for a few of these options, e.g.,

       ?   ?-background? for ?-bg?

       ?   ?-font? for ?-fn?

       ?   ?-foreground? for ?-fg?

       Abbreviated options also are supported, e.g., ?-v? for ?-version.?

RESOURCES
       Xterm understands all of the core X Toolkit resource names and classes.
       It  also  uses  the X Toolkit resource types (such as booleans, colors,
       fonts, integers, and strings) along with their  respective  converters.
       Those resource types are not always sufficient:

       ?   Xterm's  resource values may be lists of names.  X Toolkit resource
           types do not include lists.  Xterm uses a string for the  resource,
           and parses it.

           Comma-separated lists of names ignore case.

       ?   Xterm  may  defer  processing  a  resource until it is needed.  For
           example, font2 through font7 are loaded as needed, to start faster.
           Again, the actual resource type is a string, parsed and  used  when
           needed.

       Application specific resources (e.g., ?XTerm.NAME?) follow:

   Application Resources
       backarrowKeyIsErase (class BackarrowKeyIsErase)
               Tie   the  VTxxx  backarrowKey  and  ptyInitialErase  resources
               together by setting the DECBKM state according to  whether  the
               initial  erase  character  is  a  backspace (8) or delete (127)
               character.  A ?false? value disables this feature.  The default
               is ?True?.

               Here are tables showing how the initial settings for

               ?   backarrowKeyIsErase (BKIE),

               ?   backarrowKey (BK), and

               ?   ptyInitialErase (PIE), along with the

               ?   stty erase character (^H for backspace, ^? for delete)

               will affect DECBKM.  First, xterm  obtains  the  initial  erase
               character:

               ?   xterm's internal value is ^H

               ?   xterm  asks  the  operating system for the value which stty
                   shows

               ?   the ttyModes resource may override erase

               ?   if  ptyInitialErase  is  false,  xterm  will  look  in  the
                   terminal database

               Summarizing that as a table:
               PIE     stty   termcap   erase
               ???????????????????????????????
               false    ^H      ^H       ^H
               false    ^H      ^?       ^?
               false    ^?      ^H       ^H
               false    ^?      ^?       ^?
               true     ^H      ^H       ^H
               true     ^H      ^?       ^H
               true     ^?      ^H       ^?
               true     ^?      ^?       ^?

               Using that erase character, xterm allows further choices:

               ?   if  backarrowKeyIsErase  is  true,  xterm  uses  the  erase
                   character for the initial state of DECBKM

               ?   if backarrowKeyIsErase is false, xterm  sets  DECBKM  to  2
                   (internal).    This  ties  together  backarrowKey  and  the
                   control sequence for DECBKM.

               ?   applications can  send  a  control  sequence  to  set/reset
                   DECBKM control set

               ?   the ?Backarrow Key (BS/DEL)? menu entry toggles DECBKM

               Summarizing the initialization details:
               erase   BKIE    BK      DECBKM   result
               ????????????????????????????????????????
                ^?     false   false     2        ^H
                ^?     false   true      2        ^?
                ^?     true    false     0        ^?
                ^?     true    true      1        ^?
                ^H     false   false     2        ^H
                ^H     false   true      2        ^?
                ^H     true    false     0        ^H
                ^H     true    true      1        ^H

       buffered (class Buffered)
               Normally  xterm  is  built  with  double-buffer  support.  This
               resource can be used  to  turn  it  on  or  off.   Setting  the
               resource  to  ?true?  turns  double-buffering  on.  The default
               value is ?False?.

       bufferedFPS (class BufferedFPS)
               When xterm is built with double-buffer support, this gives  the
               maximum  number  of  frames/second.  The default is ?40? and is
               limited to the range 1 through 100.

       cursorTheme (class CursorTheme)
               The Xcursor(7) library provides a way  to  change  the  pointer
               shape  and  size.   The X11 library uses this library to extend
               the font- and glyph-cursor calls used by applications  such  as
               xterm   to  substitute  external  files for the built-in ?core?
               cursors provided by X.

               Xterm uses the pointerShape resource to  select  the  X  cursor
               shape.   Most of the available sets of cursor themes provide an
               incomplete set of ?core? cursors (while possibly  adding  other
               cursors).   Because  of  this  limitation,  xterm  disables the
               feature by default.

               The cursor theme feature can be useful because  X  cursors  are
               not  scalable and on a high-resolution display, the cursors are
               hard to find.  Some of the cursor themes include larger cursors
               to work around this limitation:

               ?   The default core cursors are 8x8 pixels;

               ?   Some cursor themes include cursors up to the X server limit
                   of 64x64 pixels.

               At startup, xterm sets the XCURSOR_THEME  environment  variable
               to  enable  or  disable  the cursor theme feature.  The default
               value is ?none?.  Other values (including ?default?) are passed
               to the Xcursor library to select a cursor theme.

       fullscreen (class Fullscreen)
               Specifies whether or not xterm should ask the window manager to
               use a fullscreen layout on startup.   Xterm  accepts  either  a
               keyword (ignoring case) or the number shown in parentheses:

               false (0)
                  Fullscreen  layout  is  not used initially, but may be later
                  via menu-selection or control sequence.

               true (1)
                  Fullscreen layout is used initially,  but  may  be  disabled
                  later via menu-selection or control sequence.

               always (2)
                  Fullscreen  layout is used initially, and cannot be disabled
                  later via menu-selection or control sequence.

               never (3)
                  Fullscreen layout is not used, and cannot be  enabled  later
                  via menu-selection or control sequence.

               The default is ?false?.

       hold (class Hold)
               If true, xterm will not immediately destroy its window when the
               shell command completes.  It will wait until you use the window
               manager  to  destroy/kill  the  window,  or if you use the menu
               entries that send a signal, e.g., HUP or KILL.  You may  scroll
               back,  select text, etc., to perform most graphical operations.
               Resizing the  display  will  lose  data,  however,  since  this
               involves interaction with the shell which is no longer running.

       hpFunctionKeys (class HpFunctionKeys)
               Specifies whether or not HP function key escape codes should be
               generated  for  function  keys.   The default is ?false?, i.e.,
               this feature is disabled.

               The  keyboardType  resource  is  the  preferred  mechanism  for
               selecting this mode.

       iconGeometry (class IconGeometry)
               Specifies  the  preferred  size and position of the application
               when iconified.  It is not necessarily  obeyed  by  all  window
               managers.

       iconHint (class IconHint)
               Specifies  an  icon  which  will be added to the window manager
               hints.  Xterm provides no default value.

               Set this resource to ?none? to omit the  hint  entirely,  using
               whatever the window manager may decide.

               If the iconHint resource is given (or is set via the -n option)
               xterm searches for a pixmap file with that name, in the current
               directory  as  well  as in /usr/share/pixmaps.  if the resource
               does not specify an absolute pathname.   In  each  case,  xterm
               adds  ?_48x48?  and/or  ?.xpm?  to  the  filename  after trying
               without those suffixes.  If it is able to load the file,  xterm
               sets  the  window  manager  hint  for  the  icon-pixmap.  These
               pixmaps are distributed  with  xterm,  and  can  optionally  be
               compiled-in:

               ?   mini.xterm_16x16, mini.xterm_32x32, mini.xterm_48x48

               ?   filled-xterm_16x16, filled-xterm_32x32, filled-xterm_48x48

               ?   xterm_16x16, xterm_32x32, xterm_48x48

               ?   xterm-color_16x16, xterm-color_32x32, xterm-color_48x48

               In  either  case, xterm allows for adding a ?_48x48? to specify
               the largest of the pixmaps as a default.  That is, ?mini.xterm?
               is the same as ?mini.xterm_48x48?.

               If no explicit iconHint resource is given (or if  none  of  the
               compiled-in  names  matches), xterm uses ?mini.xterm? (which is
               always compiled-in).

               The  iconHint  resource  has  no  effect  on  ?desktop?  files,
               including  ?panel?  and  ?menu?.  Those are typically set via a
               ?.desktop? file; xterm provides samples  for  itself  (and  the
               uxterm   script).   The  more  capable  desktop  systems  allow
               changing the icon on a per-user basis.

       iconName (class IconName)
               Specifies a label for xterm when iconified.  Xterm provides  no
               default  value; some window managers may assume the application
               name, e.g., ?xterm?.

               Setting the  iconName  resource  sets  the  icon  label  unless
               overridden  by  zIconBeep or the control sequences which change
               the window and icon labels.

       keyboardType (class KeyboardType)
               Enables one (or none) of the various  keyboard-type  resources:
               hpFunctionKeys,        scoFunctionKeys,        sunFunctionKeys,
               tcapFunctionKeys, oldXtermFKeys and sunKeyboard.

               The resource's value should be one of the corresponding strings
               ?hp?, ?sco?, ?sun?, ?tcap?, ?legacy? or ?vt220?, respectively.

               The individual resources are provided for legacy support;  this
               resource  is simpler to use.  Xterm will use only one keyboard-
               type, but if multiple resources are set, it warns and uses  the
               last one it checks.

               The   default  is  ?unknown?,  i.e.,  none  of  the  associated
               resources are set via this resource.

       maxBufSize (class MaxBufSize)
               Specify the maximum size of the input buffer.  The  default  is
               ?32768?.   You  cannot  set  this  to  a  value  less  than the
               minBufSize resource.  It will be increased as  needed  to  make
               that value evenly divide this one.

               On  some  systems  you  may want to increase one or both of the
               maxBufSize and minBufSize resource  values  to  achieve  better
               performance  if  the  operating  system  prefers  larger buffer
               sizes.

       maximized (class Maximized)
               Specifies whether or not xterm should ask the window manager to
               maximize its layout on startup.  The default is ?false?.

       menuHeight (class MenuHeight)
               Specifies the height of the toolbar, which may be increased  by
               the  X  Toolkit Layout widget depending upon the fontsize used.
               The default is ?25?.

       menuLocale (class MenuLocale)
               Specify the locale used  for  character-set  computations  when
               loading  the  popup  menus.  Use this to improve initialization
               performance  of  the  Athena  popup  menus,  which   may   load
               unnecessary  (and  very  large) fonts, e.g., in a locale having
               UTF-8 encoding.  The default is ?C? (POSIX).

               To use the current locale (only useful if  you  have  localized
               the  resource  settings for the menu entries), set the resource
               to an empty string.

       messages (class Messages)
               Specifies whether write  access  to  the  terminal  is  allowed
               initially.  See mesg(1).  The default is ?true?.

       minBufSize (class MinBufSize)
               Specify  the minimum size of the input buffer, i.e., the amount
               of data that xterm requests  on  each  read.   The  default  is
               ?4096?.  You cannot set this to a value less than 64.

       omitTranslation (class OmitTranslation)
               Selectively   omit   one  or  more  parts  of  xterm's  default
               translations at  startup.   The  resource  value  is  a  comma-
               separated list of keywords, which may be abbreviated:

               default
                      ignore (mouse) button-down events which were not handled
                      by other translations

               fullscreen
                      assigns a key-binding to the fullscreen() action.

               keypress
                      assigns  keypresses by default to the insert-seven-bit()
                      and insert-eight-bit() actions.

               paging assigns  key   bindings   to   the   scroll-back()   and
                      scroll-forw() actions.

               pointer
                      assigns   pointer   motion  and  button  events  to  the
                      pointer-motion()    and     pointer-button()     actions
                      respectively.

               popup-menu
                      assigns  mouse-buttons  with the control modifier to the
                      popup-menus.

               reset  assigns mouse-button 2 with the  meta  modifier  to  the
                      clear-saved-lines action.

               scroll-lock
                      assigns a key-binding to the scroll-lock() action.

               select assigns  mouse-  and  keypress-combinations  to  actions
                      which manipulate the selection.

                      Xterm also uses these actions to  capture  mouse  button
                      and  motion  events  which  can  be manipulated with the
                      mouse  protocol  control  sequences.   If   the   select
                      translations  are  omitted,  then the pointer-motion and
                      pointer-button  handle  these  mouse  protocol   control
                      sequences instead.

               shift-fonts
                      assigns    key-bindings    to    larger-vt-font()    and
                      smaller-vt-font() actions.

               wheel-mouse
                      assigns buttons 4 and 5 with different modifiers to  the
                      scroll-back() and scroll-forw() actions.

       ptyHandshake (class PtyHandshake)
               If ?true?, xterm will perform handshaking during initialization
               to  ensure  that the parent and child processes update the utmp
               and stty(1) state.

               See also  waitForMap  which  waits  for  the  pseudo-terminal's
               notion  of  the  screen  size, and ptySttySize which resets the
               screen size after other terminal  initialization  is  complete.
               The default is ?true?.

       ptyInitialErase (class PtyInitialErase)
               If  ?true?,  xterm  will use the pseudo-terminal's sense of the
               stty erase value.  If ?false?, xterm will set  the  stty  erase
               value  to match its own configuration, using the kb string from
               the termcap entry as a reference, if available.

               In either case, the result is applied to the  TERMCAP  variable
               which xterm sets, if the system uses TERMCAP.

               See  also  the ttyModes resource, which may override this.  The
               default is ?True?.

       ptySttySize (class PtySttySize)
               If ?true?, xterm will reset  the  screen  size  after  terminal
               initialization  is  complete.   This is needed for some systems
               whose    pseudo-terminals     cannot     propagate     terminal
               characteristics.  Where it is not needed, it can interfere with
               other  methods  for  setting the initial screen size, e.g., via
               window manager interaction.

               See also waitForMap which waits for a handshake-message  giving
               the  pseudo-terminal's  notion of the screen size.  The default
               is ?false? on Linux and macOS systems, ?true? otherwise.

       reportColors (class ReportColors)
               If true, xterm will print to the standard output a  summary  of
               colors as it allocates them.  The default is ?false?.

       reportFonts (class ReportFonts)
               If  true,  xterm will print to the standard output a summary of
               each font's metrics (size, number of glyphs, etc.), as it loads
               them.  The default is ?false?.

       reportIcons (class ReportIcons)
               If true, xterm will print to the standard output a  summary  of
               each pixmap icon as it loads them.  The default is ?false?.

       reportXRes (class ReportXRes)
               If  true, xterm will print to the standard output a list of the
               boolean, numeric and string X resources for  the  VT100  widget
               after initialization.  The default is ?false?.

       sameName (class SameName)
               If  the  value  of this resource is ?true?, xterm does not send
               title and icon name change requests when the request would have
               no effect: the name is not changed.  This has the advantage  of
               preventing  flicker  and the disadvantage of requiring an extra
               round trip to the server to find out the  previous  value.   In
               practice  this  should  never  be  a  problem.   The default is
               ?true?.

       scaleHeight (class ScaleHeight)
               Scale line-height  values  by  the  resource  value,  which  is
               limited to ?0.9? to ?1.5?.  The default value is ?1.0?,

               While this resource applies to either bitmap or TrueType fonts,
               its main purpose is to help work around incompatible changes in
               the  Xft library's font metrics.  Xterm checks the font metrics
               to find what the library claims are the bounding boxes for each
               glyph (character).  However, some of Xft's  features  (such  as
               the  autohinter)  can cause the glyphs to be scaled larger than
               the bounding boxes, and be partly overwritten by the next row.

               See useClipping for a related resource.

       scoFunctionKeys (class ScoFunctionKeys)
               Specifies whether or not SCO function key escape  codes  should
               be  generated for function keys.  The default is ?false?, i.e.,
               this feature is disabled.

               The  keyboardType  resource  is  the  preferred  mechanism  for
               selecting this mode.

       sessionMgt (class SessionMgt)
               If  the value of this resource is ?true?, xterm sets up session
               manager callbacks for XtNdieCallback and XtNsaveCallback.   The
               default is ?true?.

       sunFunctionKeys (class SunFunctionKeys)
               Specifies  whether  or not Sun function key escape codes should
               be generated for function keys.  The default is ?false?,  i.e.,
               this feature is disabled.

               The  keyboardType  resource  is  the  preferred  mechanism  for
               selecting this mode.

       sunKeyboard (class SunKeyboard)
               Xterm translates certain key symbols based on  its  assumptions
               about  your  keyboard.   This resource specifies whether or not
               Sun/PC keyboard layout (i.e., the PC keyboard's numeric  keypad
               together  with  12 function keys) should be assumed rather than
               DEC VT220.  This causes the keypad ?+? to  be  mapped  to  ?,?.
               and  CTRL  F1-F10  to  F11-F20, depending on the setting of the
               ctrlFKeys  resource,  so  xterm  emulates  a  DEC  VT220   more
               accurately.   Otherwise  (the  default, with sunKeyboard set to
               ?false?), xterm uses PC-style bindings for  the  function  keys
               and keypad.

               PC-style  bindings use the Shift, Alt, Control and Meta keys as
               modifiers for  function-keys  and  keypad  (see  Xterm  Control
               Sequences for details).  The PC-style bindings are analogous to
               PCTerm, but not the same thing.  Normally these bindings do not
               conflict  with  the  use  of  the Meta key as described for the
               eightBitInput resource.  If they do,  note  that  the  PC-style
               bindings are evaluated first.

               See also the keyboardType resource.

       tcapFunctionKeys (class TcapFunctionKeys)
               Specifies  whether  or  not function key escape codes read from
               the  termcap/terminfo   entry   corresponding   to   the   TERM
               environment  variable  should  be  generated  for function keys
               instead of those configured using sunKeyboard and keyboardType.
               The default is ?false?, i.e., this feature is disabled.

               The  keyboardType  resource  is  the  preferred  mechanism  for
               selecting this mode.

       termName (class TermName)
               Specifies  the  terminal  type  name  to  be  set  in  the TERM
               environment variable.

       title (class Title)
               Specifies a string that may be used by the window manager  when
               displaying this application.

       toolBar (class ToolBar)
               Specifies  whether or not the toolbar should be displayed.  The
               default is ?true?.

       ttyModes (class TtyModes)
               Specifies  a  string  containing  terminal  setting   keywords.
               Except  where  noted,  they  may be bound to characters.  Other
               keywords set modes.  Not all keywords are supported on a  given
               system.  Allowable keywords include:
               Keyword   POSIX?   Notes
               ????????????????????????????????????????????????????????????????
               brk       no       CHAR may send an ?interrupt? signal, as well
                                  as ending the input-line.
               dsusp     no       CHAR  will  send  a  terminal  ?stop? signal
                                  after input is flushed.
               eof       yes      CHAR will terminate input (i.e., an  end  of
                                  file).
               eol       yes      CHAR will end the line.
               eol2      no       alternate CHAR for ending the line.
               erase     yes      CHAR will erase the last character typed.
               erase2    no       alternate  CHAR  for erasing the last input-
                                  character.
               flush     no       CHAR will cause output to be discarded until
                                  another flush character is typed.
               intr      yes      CHAR will send an ?interrupt? signal.
               kill      yes      CHAR will erase the current line.
               lnext     no       CHAR will enter the next character quoted.
               quit      yes      CHAR will send a ?quit? signal.
               rprnt     no       CHAR will redraw the current line.
               start     yes      CHAR will restart the output after  stopping
                                  it.
               status    no       CHAR  will  cause  a system-generated status
                                  line to be printed.
               stop      yes      CHAR will stop the output.
               susp      yes      CHAR will send a terminal ?stop? signal
               swtch     no       CHAR will switch to a different shell layer.
               tabs      yes      Mode disables tab-expansion.
               -tabs     yes      Mode enables tab-expansion.
               weras     no       CHAR will erase the last word typed.

               Control characters may be specified as ^char (e.g., ^c  or  ^u)
               and  ^? may be used to indicate delete (127).  Use ^- to denote
               undef.  Use \034 to represent ^\, since a literal backslash  in
               an X resource escapes the next character.

               This  is  very  useful  for  overriding  the  default  terminal
               settings without having to run stty(1) every time an  xterm  is
               started.   Note, however, that the stty program on a given host
               may use different keywords; xterm's table  is  built  in.   The
               POSIX   column  in  the  table  indicates  which  keywords  are
               supported by a standard stty program.

               If the ttyModes resource specifies  a  value  for  erase,  that
               overrides  the  ptyInitialErase  resource  setting, i.e., xterm
               initializes the terminal to match that value.

       useInsertMode (class UseInsertMode)
               Force use of insert mode by adding appropriate entries  to  the
               TERMCAP  environment  variable.   This  is useful if the system
               termcap is broken.  (This resource is ignored on most  systems,
               because TERMCAP is not used).  The default is ?false?.

       utmpDisplayId (class UtmpDisplayId)
               Specifies whether or not xterm should try to record the display
               identifier  (display  number  and screen number) as well as the
               hostname in the system utmp log file.  The default is ?true?.

       utmpInhibit (class UtmpInhibit)
               Specifies whether or not xterm should try to record the  user's
               terminal  in the system utmp log file.  If true, xterm will not
               try.  The default is ?false?.

       validShells (class ValidShells)
               Augment (add to) the  system's  /etc/shells,  when  determining
               whether  to set the ?SHELL? environment variable when running a
               given program.

               The resource value is a list of lines (separated by  newlines).
               Each line holds one pathname.  Xterm ignores any line beginning
               with  ?#?  after trimming leading/trailing whitespace from each
               line.

               The default is an empty string.

       waitForMap (class WaitForMap)
               Specifies whether or not xterm  should  wait  for  the  initial
               window map before starting the subprocess.  This is part of the
               ptyHandshake  logic.   When  xterm  is directed to wait in this
               fashion, it passes the terminal size from the  display  end  of
               the pseudo-terminal to the terminal I/O connection, e.g., using
               the  size  according to the window manager.  Otherwise, it uses
               the size as given in resource  values  or  command-line  option
               -geometry.  The default is ?false?.

       zIconBeep (class ZIconBeep)
               Same as -ziconbeep command line argument.  If the value of this
               resource   is   non-zero,  xterms  that  produce  output  while
               iconified will cause an XBell sound at  the  given  volume  and
               have  ?*** ?  prepended  to  their  icon  titles.   Most window
               managers will detect this change immediately, showing you which
               window has the output.  (A similar feature was in  x10  xterm.)
               The default is ?false?.

       zIconTitleFormat (class ZIconTitleFormat)
               Allow  customization  of  the  string  used  in  the  zIconBeep
               feature.  The default value is ?*** %s?.

               If the resource value contains a ?%s?, then xterm  inserts  the
               icon  title  at that point rather than prepending the string to
               the icon title.  (Only the first ?%s? is used).

   VT100 Widget Resources
       The following resources are specified  as  part  of  the  vt100  widget
       (class    VT100).    They   are   specified   by   patterns   such   as
       ?XTerm.vt100.NAME?.

       If your xterm is  configured  to  support  the  ?toolbar?,  then  those
       patterns  need  an  extra  level  for  the  form-widget which holds the
       toolbar and vt100 widget.  A wildcard between the top-level ?XTerm? and
       the ?vt100? widget makes the resource settings work for  either,  e.g.,
       ?XTerm*vt100.NAME?.

       activeIcon (class ActiveIcon)
               Specifies  whether  or  not  active icon windows are to be used
               when the xterm window is iconified, if this feature is compiled
               into xterm.  The active icon is a miniature  representation  of
               the  content  of  the  window  and  will  update as the content
               changes.   Not  all   window   managers   necessarily   support
               application  icon windows.  Some window managers will allow you
               to enter keystrokes into the active icon window.   The  default
               is ?default?.

               Xterm  accepts  either  a keyword (ignoring case) or the number
               shown in parentheses:

               false (0)
                      No active icon is shown.

               true (1)
                      The active icon is shown.  If you  are  using  twm,  use
                      this setting to enable active-icons.

               default (2)
                      Xterm  checks  at startup, and shows an active icon only
                      for window managers which it can identify and which  are
                      known  to  support  the  feature.   These are fvwm (full
                      support), and  window  maker  (limited).   A  few  other
                      window  managers  (such  as twm and ctwm) support active
                      icons, but do not support  the  extensions  which  allow
                      xterm to identify the window manager.

       allowBoldFonts (class AllowBoldFonts)
               When  set  to  ?false?,  xterm  will  not use bold fonts.  This
               overrides both the alwaysBoldMode and the boldMode resources.

       allowC1Printable (class AllowC1Printable)
               If true, overrides the mapping of C1 controls  (codes  128?159)
               to  make  them be treated as if they were printable characters.
               Although this corresponds to no particular standard, some users
               insist it is a VT100.  The default is ?false?.

       allowColorOps (class AllowColorOps)
               Specifies whether control sequences that set/query the  dynamic
               colors  should  be allowed.  ANSI colors are unaffected by this
               resource setting.  The default is ?true?.

       allowFontOps (class AllowFontOps)
               Specifies whether control sequences  that  set/query  the  font
               should be allowed.  The default is ?false?.

       allowMouseOps (class AllowMouseOps)
               Specifies  whether  control sequences that enable xterm to send
               escape sequences to the host on mouse-clicks and movement.  The
               default is ?true?.

       allowPasteControls (class AllowPasteControls)
               If true, allow control characters such as BEL  and  CAN  to  be
               pasted.   Formatting  characters  (tab,  newline)  are normally
               allowed,  unless  suppressed  via  the  disallowedPasteControls
               resource.   Other  C0  control characters are suppressed unless
               this resource is enabled.  The exact set of control  characters
               (C0  and  C1)  depends  upon whether UTF-8 encoding is used, as
               well  as  the  allowC1Printable   and   disallowedPasteControls
               resources.  The default is ?false?.

       allowScrollLock (class AllowScrollLock)
               Specifies  whether  control sequences that set/query the Scroll
               Lock key should be allowed, as well as whether the Scroll  Lock
               key responds to user's keypress.  The default is ?false?.

               When this feature is enabled, xterm will sense the state of the
               Scroll  Lock  key  each  time  it acquires focus.  Pressing the
               Scroll Lock key toggles xterm's  internal  state,  as  well  as
               toggling  the associated LED.  While the Scroll Lock is active,
               xterm attempts to keep a viewport on the same set of lines.  If
               the current viewport is scrolled past  the  limit  set  by  the
               saveLines resource, then Scroll Lock has no further effect.

               The  reason for setting the default to ?false? is to avoid user
               surprise.   This  key   is   generally   unused   in   keyboard
               configurations,  and  has  not acquired a standard meaning even
               when it is used  in  that  manner.   Consequently,  users  have
               assigned it for ad hoc purposes.

               See also the autoScrollLock resource.

       allowSendEvents (class AllowSendEvents)
               Specifies  whether  or  not  synthetic  key  and  button events
               (generated using the X protocol SendEvent  request)  should  be
               interpreted  or discarded.  The default is ?false? meaning they
               are discarded.  Note that allowing such events would  create  a
               very  large  security  hole,  therefore  enabling this resource
               forcefully disables the allowXXXOps resources.  The default  is
               ?false?.

       allowTcapOps (class AllowTcapOps)
               Specifies  whether  control sequences that query the terminal's
               notion of its function-key  strings,  as  termcap  or  terminfo
               capabilities should be allowed.  The default is ?true?.

               A  few programs, e.g., vim, use this feature to get an accurate
               description of the terminal's capabilities, independent of  the
               termcap/terminfo setting:

               ?   Xterm  can  tell  the  querying  program how many colors it
                   supports.  This is a  constant,  depending  on  how  it  is
                   compiled,  typically  16.   It does not change if you alter
                   resource settings, e.g., the boldColors resource.

               ?   Xterm can tell the querying program what strings  are  sent
                   by  modified (shift-, control-, alt-) function- and keypad-
                   keys.  Reporting control- and alt-modifiers  is  a  feature
                   that relies on the ncurses extended naming.

       allowTitleOps (class AllowTitleOps)
               Specifies  whether  control  sequences  that  modify the window
               title or icon name should be allowed.  The default is ?true?.

       allowWindowOps (class AllowWindowOps)
               Specifies whether extended window control sequences (as used in
               dtterm) should  be  allowed.   These  include  several  control
               sequences which manipulate the window size or position, as well
               as  reporting these values and the title or icon name.  Each of
               these can be abused in a script; curiously enough most terminal
               emulators that implement these restrict only a  small  part  of
               the repertoire.  For fine-tuning, see disallowedWindowOps.  The
               default is ?false?.

       altIsNotMeta (class AltIsNotMeta)
               If  ?true?, treat the Alt-key as if it were the Meta-key.  Your
               keyboard may happen to be configured so they are the same.  But
               if they are not, this allows you to use the  same  prefix-  and
               shifting operations with the Alt-key as with the Meta-key.  See
               altSendsEscape and metaSendsEscape.  The default is ?false?.

       altSendsEscape (class AltSendsEscape)
               This  is an additional keyboard operation that may be processed
               after the logic for metaSendsEscape.  It is only  available  if
               the altIsNotMeta resource is set.

               ?   If  ?true?,  Alt  characters (a character combined with the
                   modifier associated with left/right Alt-keys) are converted
                   into a two-character sequence  with  the  character  itself
                   preceded  by  ESC.   This  applies  as well to function key
                   control sequences, unless xterm sees that Alt  is  used  in
                   your key translations.

               ?   If  ?false?, Alt characters input from the keyboard cause a
                   shift to 8-bit characters (just like metaSendsEscape).   By
                   combining  the  Alt-  and  Meta-modifiers,  you  can create
                   corresponding  combinations   of   ESC-prefix   and   8-bit
                   characters.

               The  default  is  ?False?.   Xterm  provides  a menu option for
               toggling this resource.

       alternateScroll (class ScrollCond)
               If  ?true?,  the  scroll-back  and  scroll-forw  actions   send
               cursor-up and -down keys when xterm is displaying the alternate
               screen.  The default is ?false?.

               The  alternateScroll  state  can  also  be  set using a control
               sequence.

       alwaysBoldMode (class AlwaysBoldMode)
               Specifies whether xterm should check if  the  normal  and  bold
               fonts  are distinct before deciding whether to use overstriking
               to simulate bold fonts.  If this resource is true,  xterm  does
               not  make  the  check  for  distinct fonts when deciding how to
               handle the boldMode resource.  The default is ?false?.
               boldMode   alwaysBoldMode   Comparison   Action
               ????????????????????????????????????????????????????
               false      false            ignored      use font
               false      true             ignored      use font
               true       false            same         overstrike
               true       false            different    use font
               true       true             ignored      overstrike

               This resource is used only for bitmap fonts:

               ?   When using bitmap fonts,  it  is  possible  that  the  font
                   server  will approximate the bold font by rescaling it from
                   a different font size than  expected.   The  alwaysBoldMode
                   resource  allows  the user to override the (sometimes poor)
                   resulting bold font with overstriking (which  is  at  least
                   consistent).

               ?   The  problem  does  not  occur  with TrueType fonts (though
                   there can be other unnecessary  issues  such  as  different
                   coverage of the normal and bold fonts).

               As an alternative, setting the allowBoldFonts resource to false
               overrides both the alwaysBoldMode and the boldMode resources.

       alwaysHighlight (class AlwaysHighlight)
               Specifies   whether  or  not  xterm  should  always  display  a
               highlighted text cursor.   By  default  (if  this  resource  is
               false),  a hollow text cursor is displayed whenever the pointer
               moves out of the window or the window loses  the  input  focus.
               The default is ?false?.

       alwaysUseMods (class AlwaysUseMods)
               Override the numLock resource, telling xterm to use the Alt and
               Meta   modifiers  to  construct  parameters  for  function  key
               sequences even if those modifiers appear  in  the  translations
               resource.   Normally  xterm  checks if Alt or Meta is used in a
               translation that would conflict with  function  key  modifiers,
               and  will  ignore  these  modifiers  in that special case.  The
               default is ?false?.

       answerbackString (class AnswerbackString)
               Specifies the string that xterm sends in  response  to  an  ENQ
               (control/E)  character  from  the host.  The default is a blank
               string, i.e., ??.  A hardware VT100 implements this feature  as
               a setup option.

       appcursorDefault (class AppcursorDefault)
               If  ?true?,  the cursor keys are initially in application mode.
               This is the same as the VT102 private DECCKM mode, The  default
               is ?false?.

       appkeypadDefault (class AppkeypadDefault)
               If  ?true?,  the keypad keys are initially in application mode.
               The default is ?false?.

       assumeAllChars (class AssumeAllChars)
               If ?true?, this enables a special case in bitmap fonts to allow
               the font server to choose how to display missing  glyphs.   The
               default is ?true?.

               The  reason  for  this  resource is to help with certain quasi-
               automatically generated fonts (such as the ISO-10646-1 encoding
               of Terminus) which have incorrect font-metrics.

       autoScrollLock (class AutoScrollLock)
               If ?true?, xterm will maintain its viewport of displayed  lines
               whenever  displaying  scrollback,  as  if  allowScrollLock were
               enabled and the Scroll Lock key had been pressed.  The  default
               is ?false?.  This feature is only useful if the scrollTtyOutput
               resource is set to ?false?.

       autoWrap (class AutoWrap)
               Specifies  whether  or  not  auto-wraparound should be enabled.
               This is the same as the VT102 DECAWM.  The default is ?true?.

       awaitInput (class AwaitInput)
               Specifies whether or not xterm uses a 50 millisecond timeout to
               await input (i.e., to support the Xaw3d arrow scrollbar).   The
               default is ?false?.

       backarrowKey (class BackarrowKey)
               Specifies  whether  the backarrow key transmits a backspace (8)
               or delete (127) character.   This  corresponds  to  the  DECBKM
               control  sequence.   A  ?true?  value specifies backspace.  The
               default is ?True?.   Pressing  the  control  key  toggles  this
               behavior.

       background (class Background)
               Specifies  the  color  to use for the background of the window.
               The default is ?XtDefaultBackground?.

       bellIsUrgent (class BellIsUrgent)
               Specifies whether to  set  the  Urgency  hint  for  the  window
               manager when making a bell sound.  The default is ?false?.

       bellOnReset (class BellOnReset)
               Specifies whether to sound a bell when doing a hard reset.  The
               default is ?true?.

       bellSuppressTime (class BellSuppressTime)
               Number  of  milliseconds  after  a  bell command is sent during
               which additional bells will be suppressed.  Default is 200.  If
               set non-zero, additional bells will also  be  suppressed  until
               the  server  reports that processing of the first bell has been
               completed; this feature is most useful with the visible bell.

       boldColors (class ColorMode)
               Specifies whether to combine bold attribute  with  colors  like
               the  IBM  PC,  i.e., map colors 0 through 7 to colors 8 through
               15.  These normally are the brighter versions of  the  first  8
               colors, hence bold.  The default is ?true?.

       boldFont (class BoldFont)
               Specifies  the  name  of  the  bold  font  to  use  instead  of
               overstriking.  There is no default for this resource.

               This font must be the same height and width as the normal font,
               otherwise it is ignored.  If only one of  the  normal  or  bold
               fonts  is specified, it will be used as the normal font and the
               bold font will be produced by overstriking this font.

               See  also  the  discussion  of  boldMode   and   alwaysBoldMode
               resources.

       boldMode (class BoldMode)
               This  specifies  whether  or  not  text with the bold attribute
               should be overstruck to simulate bold  fonts  if  the  resolved
               bold  font is the same as the normal font.  It may be desirable
               to disable bold fonts when color is being  used  for  the  bold
               attribute.

               Note that xterm has one bold font which you may set explicitly.
               Xterm  attempts  to  derive  a  bold  font  for  the other font
               selections (font1 through font7).  If it  cannot  find  a  bold
               font,  it  will use the normal font.  In each case (whether the
               explicit resource or the derived font), if the normal and  bold
               fonts  are  distinct, this resource has no effect.  The default
               is ?true?.

               See the alwaysBoldMode resource which can modify  the  behavior
               of this resource.

               Although  xterm  attempts  to derive a bold font for other font
               selections, the font server may not  cooperate.   Since  X11R6,
               bitmap  fonts  have  been  scaled.   The  font server claims to
               provide the bold font that xterm requests, but  the  result  is
               not always readable.  XFree86 introduced a feature which can be
               used  to suppress the scaling.  In the X server's configuration
               file (e.g., ?/etc/X11/XFree86?  or  ?/etc/X11/xorg.conf?),  you
               can  add  ?:unscaled? to the end of the directory specification
               for the ?misc? fonts, which comprise the fixed-pitch fonts that
               are used by xterm.  For example

                   FontPath  "/usr/lib/X11/fonts/misc/"

               would become

                   FontPath  "/usr/lib/X11/fonts/misc/:unscaled"

               Depending on your configuration, the font server may  have  its
               own  configuration  file.  The same ?:unscaled? can be added to
               its  configuration  file  at   the   end   of   the   directory
               specification for ?misc?.

               The  bitmap  scaling feature is also used by xterm to implement
               VT102 double-width and double-height characters.

       brokenLinuxOSC (class BrokenLinuxOSC)
               If true, xterm applies a workaround to ignore malformed control
               sequences that a Linux script might send.  Compare the  palette
               control  sequences  documented  in  console_codes with ECMA-48.
               The default is ?true?.

       brokenSelections (class BrokenSelections)
               If true, xterm in 8-bit mode will interpret  STRING  selections
               as  carrying  text  in the current locale's encoding.  Normally
               STRING selections carry ISO-8859-1 encoded text.  Setting  this
               resource  to  ?true?  violates  the  ICCCM; it may, however, be
               useful for interacting with some broken X clients.  The default
               is ?false?.

       brokenStringTerm (class BrokenStringTerm)
               provides a work-around for some ISDN  routers  which  start  an
               application  control string without completing it.  Set this to
               ?true? if xterm appears to freeze when connecting.  The default
               is ?false?.

               Xterm's  state  parser  recognizes  several  types  of  control
               strings which can contain text, e.g.,

               APC (Application Program Command),
               DCS (Device Control String),
               OSC (Operating System Command),
               PM (Privacy Message), and
               SOS (Start of String),

               Each  should  end with a string-terminator (a special character
               which  cannot  appear  in  these  strings).   Ordinary  control
               characters  found  within  the string are not ignored; they are
               processed without interfering with the process of  accumulating
               the  control string's content.  Xterm recognizes these controls
               in all modes, although some of the functions may be  suppressed
               after parsing the control.

               When  enabled,  this  feature  allows  the user to exit from an
               unterminated control string when any of these ordinary  control
               characters are found:

               control/D (used as an end of file in many shells),
               control/H (backspace),
               control/I (tab-feed),
               control/J (line feed aka newline),
               control/K (vertical tab),
               control/L (form feed),
               control/M (carriage return),
               control/N (shift-out),
               control/O (shift-in),
               control/Q (XOFF),
               control/X (cancel)

       c132 (class C132)
               Specifies  whether  or  not  the VT102 DECCOLM escape sequence,
               used to switch between 80 and 132 columns, should  be  honored.
               The default is ?false?.

       cacheDoublesize (class CacheDoublesize)
               Tells  whether  to cache double-sized fonts by xterm.  Set this
               to zero to disable double-sized fonts altogether.

       cdXtraScroll (class CdXtraScroll)
               Specifies whether xterm  should  scroll  to  a  new  page  when
               clearing  the  whole  screen.  Like tiXtraScroll, the intent of
               this  option  is  to  provide  a  picture  of  the  full-screen
               application's  display  on the scrollback before wiping out the
               text.

               Xterm accepts either a keyword (ignoring case)  or  the  number
               shown in parentheses:

               false (0)
                      nothing is added to the scrollback.

               true (1)
                      the current screen is added to the scrollback.

               trim (2)
                      the  current  screen  is  added  to  the scrollback, but
                      repeated blank lines are trimmed (reduced  to  a  single
                      blank line).

               The default for this resource is ?false?.

       charClass (class CharClass)
               Specifies  comma-separated lists of character class bindings of
               the form

                   low[-high][:value].

               These are used in determining which sets of  characters  should
               be  treated  the  same  when  doing  cut  and  paste.   See the
               CHARACTER CLASSES section.

       checksumExtension (class ChecksumExtension)
               DEC VT420 and up support  a  control  sequence  DECRQCRA  which
               reports  the  checksum of the characters in a rectangle.  Xterm
               supports this, with extensions that can be configured with bits
               of the checksumExtension:

               0    do not negate the result.

               1    do not report the VT100 video attributes.

               2    do not omit checksum for blanks.

               3    omit checksum for cells not explicitly initialized.

               4    do not mask cell value  to  8  bits  or  ignore  combining
                    characters.

               5    do not mask cell value to 7 bits.

               With the default value (0), xterm matches the behavior of DEC's
               terminals.   To  use  all  extensions,  set  all bits, ?-1? for
               example.

       cjkWidth (class CjkWidth)
               Specifies whether xterm  should  follow  the  traditional  East
               Asian  width  convention.  When turned on, characters with East
               Asian Ambiguous (A) category in UTR 11 have a column  width  of
               2.   You may have to set this option to ?true? if you have some
               old East Asian terminal based programs that assume  that  line-
               drawing  characters have a column width of 2.  If this resource
               is false, the mkWidth resource controls the choice between  the
               system's  wcwidth  and xterm's built-in tables.  The default is
               ?false?.

       color0 (class Color0)

       color1 (class Color1)

       color2 (class Color2)

       color3 (class Color3)

       color4 (class Color4)

       color5 (class Color5)

       color6 (class Color6)

       color7 (class Color7)
               These specify the  colors  for  the  ISO-6429  extension.   The
               defaults  are,  respectively,  black,  red3, green3, yellow3, a
               customizable dark  blue,  magenta3,  cyan3,  and  gray90.   The
               default  shades of color are chosen to allow the colors 8?15 to
               be used as brighter versions.

       color8 (class Color8)

       color9 (class Color9)

       color10 (class Color10)

       color11 (class Color11)

       color12 (class Color12)

       color13 (class Color13)

       color14 (class Color14)

       color15 (class Color15)
               These specify the colors for the ISO-6429 extension if the bold
               attribute is also enabled.  The  default  resource  values  are
               respectively,  gray50,  red,  green, yellow, a customized light
               blue, magenta, cyan, and white.

       color16 (class Color16)

       through

       color255 (class Color255)
               These specify the colors  for  the  256-color  extension.   The
               default resource values are for

               ?   colors 16 through 231 to make a 6x6x6 color cube, and

               ?   colors 232 through 255 to make a grayscale ramp.

               Resources  past color15 are available as a compile-time option.
               Due to a hardcoded limit in the X libraries on the total number
               of resources (to 400), the resources for 256-colors are omitted
               when wide-character support  and  luit  are  enabled.   Besides
               inconsistent  behavior  if  only  part  of  the  resources were
               allowed, determining the exact cutoff is difficult, and  the  X
               libraries  tend to crash if the number of resources exceeds the
               limit.  The color palette is  still  initialized  to  the  same
               default values, and can be modified via control sequences.

               On the other hand, the resource limit does permit including the
               entire range for 88-colors.

       colorAttrMode (class ColorAttrMode)
               Specifies whether colorBD, colorBL, colorRV, and colorUL should
               override ANSI colors.  If not, these are displayed only when no
               ANSI  colors have been set for the corresponding position.  The
               default is ?false?.

       colorBD (class ColorBD)
               This specifies the color to use to display bold  characters  if
               the   ?colorBDMode?   resource  is  enabled.   The  default  is
               ?XtDefaultForeground?.

               See also the veryBoldColors  resource  which  allows  combining
               bold and color.

       colorBDMode (class ColorAttrMode)
               Specifies  whether characters with the bold attribute should be
               displayed in color or as bold characters.   Note  that  setting
               colorMode off disables all colors, including bold.  The default
               is ?false?.

       colorBL (class ColorBL)
               This  specifies the color to use to display blink characters if
               the  ?colorBLMode?  resource  is  enabled.   The   default   is
               ?XtDefaultForeground?.

               See  also  the  veryBoldColors  resource which allows combining
               underline and color.

       colorBLMode (class ColorAttrMode)
               Specifies whether characters with the blink attribute should be
               displayed in color.  Note that setting colorMode  off  disables
               all colors, including this.  The default is ?false?.

       colorIT (class ColorIT)
               This specifies the color to use to display italic characters if
               the   ?colorITMode?   resource  is  enabled.   The  default  is
               ?XtDefaultForeground?.

               See also the veryBoldColors  resource  which  allows  combining
               attributes and color.

       colorITMode (class ColorAttrMode)
               Specifies  whether  characters with the italic attribute should
               be displayed in color or as italic characters.  The default  is
               ?false?.

               Note that:

               ?   Setting   colorMode  off  disables  all  colors,  including
                   italic.

               ?   The italicULMode resource overrides colorITMode.

       colorInnerBorder (class ColorInnerBorder)
               Normally, xterm fills the VT100 window's inner border using the
               background color.

               If the colorInnerBorder resource is enabled, at  startup  xterm
               will compare the borderColor and the window's background color.
               If those are different, xterm will use the borderColor resource
               to  fill the inner border.  Otherwise, it will use the window's
               background color.

               The default is ?false?.

       colorMode (class ColorMode)
               Specifies whether or not recognition of ANSI  (ISO-6429)  color
               change  escape  sequences  should  be  enabled.  The default is
               ?true?.

       colorRV (class ColorRV)
               This specifies the color to use to display  reverse  characters
               if  the  ?colorRVMode?  resource  is  enabled.   The default is
               ?XtDefaultForeground?.

               See also the veryBoldColors  resource  which  allows  combining
               reverse and color.

       colorRVMode (class ColorAttrMode)
               Specifies  whether characters with the reverse attribute should
               be  displayed  in  color.   Note  that  setting  colorMode  off
               disables all colors, including this.  The default is ?false?.

       colorUL (class ColorUL)
               This   specifies   the  color  to  use  to  display  underlined
               characters if  the  ?colorULMode?  resource  is  enabled.   The
               default is ?XtDefaultForeground?.

               See  also  the  veryBoldColors  resource which allows combining
               underline and color.

       colorULMode (class ColorAttrMode)
               Specifies  whether  characters  with  the  underline  attribute
               should be displayed in color or as underlined characters.  Note
               that  setting  colorMode  off  disables  all  colors, including
               underlining.  The default is ?false?.

       combiningChars (class CombiningChars)
               Specifies the number of wide-characters which can be stored  in
               a  cell  to overstrike (combine) with the base character of the
               cell.  This can be set to values in the  range  0  to  5.   The
               default is ?2?.

       ctrlFKeys (class CtrlFKeys)
               In  VT220  keyboard  mode (see sunKeyboard resource), specifies
               the amount by which to shift F1-F12 given  a  control  modifier
               (CTRL).  This allows you to generate key symbols for F10-F20 on
               a  Sun/PC keyboard.  The default is ?10?, which means that CTRL
               F1 generates the key symbol for F11.

       curses (class Curses)
               Specifies whether or not the last column bug in more(1)  should
               be worked around.  See the -cu option for details.  The default
               is ?false?.

       cursorBar (class CursorBar)
               Specifies  whether  to  make  the  cursor  a left-bar or a box,
               unless the cursorUnderline resource is  set.   The  default  is
               ?false?.

       cursorBlink (class CursorBlink)
               Specifies  whether  to  make  the  cursor blink.  Xterm accepts
               either a  keyword  (ignoring  case)  or  the  number  shown  in
               parentheses:

               false (0)
                  The  cursor  will not blink, but may be combined with escape
                  sequences according to the cursorBlinkXOR resource.

               true (1)
                  The cursor will blink,  but  may  be  combined  with  escape
                  sequences according to the cursorBlinkXOR resource.

               always (2)
                  The  cursor  will  always  blink, ignoring escape sequences.
                  The menu entry will be disabled.

               never (3)
                  The cursor will never blink, ignoring escape sequences.  The
                  menu entry will be disabled.

               The default is ?false?.

       cursorBlinkXOR (class CursorBlinkXOR)
               Xterm uses two inputs to determine whether the cursor blinks:

               ?   The cursorBlink resource (which can be altered with a  menu
                   entry).

               ?   Control sequences (private mode 12 and DECSCUSR).

               The  cursorBlinkXOR  resource  determines  how those inputs are
               combined:

               false
                    Xterm uses the logical-OR of the two variables.  If either
                    is set, xterm makes the cursor blink.

               true
                    Xterm uses the logical-XOR of the two variables.  If  only
                    one is set, xterm makes the cursor blink.

               The default is ?true?.

       cursorColor (class CursorColor)
               Specifies the color to use for the text cursor.  The default is
               ?XtDefaultForeground?.  By default, xterm attempts to keep this
               color  from  being  the  same as the background color, since it
               draws the cursor by filling the background of a text cell.  The
               same restriction applies to control sequences which may  change
               this color.

               Setting  this resource overrides most of xterm's adjustments to
               cursor color.  It will still use reverse-video to disallow some
               cases, such as a black cursor on a black background.

       cursorOffTime (class CursorOffTime)
               Specifies the duration of the ?off? part of  the  cursor  blink
               cycle-time  in  milliseconds.   The same timer is used for text
               blinking.  The default is ?300?.

       cursorOnTime (class CursorOnTime)
               Specifies the duration of the ?on? part  of  the  cursor  blink
               cycle-time,  in  milliseconds.  The same timer is used for text
               blinking.  The default is ?600?.

       cursorUnderLine (class CursorUnderLine)
               Specifies whether to make the cursor underlined or a  box.   If
               unset (false), the cursorBar resource may set the cursor shape.
               The default is ?false?.

       cutNewline (class CutNewline)
               If  ?false?,  triple clicking to select a line does not include
               the newline at the end of the line.  If ?true?, the Newline  is
               selected.  The default is ?true?.

       cutToBeginningOfLine (class CutToBeginningOfLine)
               If  ?false?, triple clicking to select a line selects only from
               the current word  forward.   If  ?true?,  the  entire  line  is
               selected.  The default is ?true?.

       decGraphicsID (class DecGraphicsID)
               Allows  a  way to combine the graphics feature from certain DEC
               terminals (125, 240, 241, 330, 340 or 382) with other emulation
               levels which did not  provide  the  graphics  feature.   As  in
               decTerminalID,  leading non-digit characters are ignored, e.g.,
               ?vt340? and ?340? are the same.

               If the resource value is nonzero,  xterm  uses  that  emulation
               level when initializing the drawing region and decoding control
               sequences to draw graphics.

               The default is ?0?.

       decTerminalID (class DecTerminalID)
               Specifies  the  emulation  level  (100=VT100, 220=VT220, etc.),
               used to  determine  the  type  of  response  to  a  DA  control
               sequence.   Leading  non-digit  characters  are  ignored, e.g.,
               ?vt100? and ?100? are the same.  The default is ?420?.

       defaultString (class DefaultString)
               Specify the character (or string) which xterm  will  substitute
               when   pasted   text  includes  a  character  which  cannot  be
               represented in the current  encoding.   For  instance,  pasting
               UTF-8 text into a display of ISO-8859-1 characters will only be
               able  to  display  codes  0?255,  while  UTF-8 text can include
               Unicode values above 255.  The default is ?#? (a  single  pound
               sign).

               If the undisplayable text would be double-width, xterm will add
               a  space  after  the  ?#?  character,  to give roughly the same
               layout on the screen as the original text.

       deleteIsDEL (class DeleteIsDEL)
               Specifies what the Delete key on the editing keypad should send
               when pressed.  The resource value is a string, evaluated  as  a
               boolean  after  startup.  Xterm uses it in conjunction with the
               keyboardType resource:

               ?   If the keyboard type  is  ?default?,  or  ?vt220?  and  the
                   resource  is  either ?true? or ?maybe? send the VT220-style
                   Remove escape sequence.  Otherwise, send DEL (127).

               ?   If the keyboard type  is  ?legacy?,  and  the  resource  is
                   ?true? send DEL.  Otherwise, send the Remove sequence.

               ?   Otherwise,  if  the  keyboard type is none of these special
                   cases, send DEL (127).

               The default is ?Maybe?.  The resource is allowed to be  a  non-
               boolean ?maybe? so that the popup menu Delete is DEL entry does
               not override the keyboard type.

       directColor (class DirectColor)
               Specifies  whether  to  handle  direct-color  control sequences
               using the X server's available colors, or to approximate  those
               using a color map with 256 entries.  A ?true? value enables the
               former.  The default is ?true?.

       disallowedColorOps (class DisallowedColorOps)
               Specify  which  features  will  be disabled if allowColorOps is
               false.  This is a comma-separated list of names.   The  default
               value is
               SetColor,GetColor,GetAnsiColor

               The  names are listed below.  Xterm ignores capitalization, but
               they are shown in mixed-case for clarity.

               SetColor
                    Set a specific dynamic color.

               GetColor
                    Report the current setting of a given dynamic color.

               GetAnsiColor
                    Report the current setting of a given ANSI color (actually
                    any of the colors set via ANSI-style controls).

       disallowedFontOps (class DisallowedFontOps)
               Specify which features will  be  disabled  if  allowFontOps  is
               false.   This  is a comma-separated list of names.  The default
               value is

                   SetFont,GetFont

               The names are listed below.  Xterm ignores capitalization,  but
               they are shown in mixed-case for clarity.

               SetFont
                    Set the specified font.

               GetFont
                    Report the specified font.

       disallowedMouseOps (class DisallowedMouseOps)
               Specify  which  features  will  be disabled if allowMouseOps is
               false.  This is a comma-separated list of names.   The  default
               value  is  ?*?  which  matches all names.  The names are listed
               below.  Xterm ignores capitalization, but  they  are  shown  in
               mixed-case for clarity.

               X10  The original X10 mouse protocol.

               Locator
                    DEC locator mode

               VT200Click
                    X11 mouse-clicks only.

               VT200Hilite
                    X11 mouse-clicks and highlighting.

               AnyButton
                    XFree86  xterm any-button mode sends button-clicks as well
                    as motion events while the button is pressed.

               AnyEvent
                    XFree86 xterm any-event mode sends button-clicks  as  well
                    as motion events whether or not a button is pressed.

               FocusEvent
                    Send FocusIn/FocusOut events.

               Extended
                    The  first  extension  beyond  X11  mouse  protocol,  this
                    encodes the coordinates in UTF-8.   It  is  deprecated  in
                    favor of SGR, but provided for compatibility.

               SGR  This is the recommended extension for mouse-coordinates

               URXVT
                    Like Extended, this is provided for compatibility.

               AlternateScroll
                    This overrides the alternateScroll resource.

       disallowedPasteControls (class DisallowedPasteControls)
               Use  this  resource  to  disallow  pasting  specific C0 control
               characters when the allowPasteControls resource is false (i.e.,
               the  default).   This  resource  defines  the  set  of  control
               characters  which  cannot  be  pasted,  converting  each into a
               space.  Other C0 controls are pasted without change.

               The resource value is a comma-separated list of  names.   Xterm
               ignores capitalization.  The default value is

                   BS,DEL,ENQ,EOT,ESC,NUL,STTY

               The names are listed below:

               C0   all ASCII control characters.

               Individual C0 characters
                    NUL,  SOH,  STX,  ETX, EOT, ENQ, ACK, BEL, BS, HT, LF, VT,
                    FF, CR, SO, SI, DLE, DC1, DC2, DC3, DC4,  NAK,  SYN,  ETB,
                    CAN, EM, SUB, ESC, FS, GS, RS, US

               DEL  ASCII delete

               NL   ASCII line-feed, i.e., ?newline? is the same as LF.

               STTY special characters which are set with stty(1).

       disallowedTcapOps (class DisallowedTcapOps)
               Specify  which  features  will  be  disabled if allowTcapOps is
               false.  This is a comma-separated list of names.   The  default
               value is

                   SetTcap,GetTcap

               The  names are listed below.  Xterm ignores capitalization, but
               they are shown in mixed-case for clarity.

               SetTcap
                    (not implemented)

               GetTcap
                    Report specified function- and other special keys.

       disallowedWindowOps (class DisallowedWindowOps)
               Specify which features will be disabled  if  allowWindowOps  is
               false.   This  is  a comma-separated list of names, or (for the
               controls  adapted  from  dtterm  the  operation  number).   The
               default value is

                   1,2,3,4,5,6,7,8,9,11,13,14,18,19,20,21,GetSelection,SetSelection,SetWinLines,SetXprop
                   (i.e., no operations are allowed).

               The  names are listed below.  Xterm ignores capitalization, but
               they are shown in mixed-case for clarity.  Where a  number  can
               be used as an alternative, it is given in parentheses after the
               name.

               GetChecksum
                    Report checksum of characters in a rectangular region.

               GetIconTitle (20)
                    Report xterm window's icon label as a string.

               GetScreenSizeChars (19)
                    Report the size of the screen in characters as numbers.

               GetSelection
                    Report selection data as a base64 string.

               GetWinPosition (13)
                    Report xterm window position as numbers.

               GetWinSizeChars (18)
                    Report the size of the text area in characters as numbers.

               GetWinSizePixels (14)
                    Report xterm window in pixels as numbers.

               GetWinState (11)
                    Report xterm window state as a number.

               GetWinTitle (21)
                    Report xterm window's title as a string.

               LowerWin (6)
                    Lower  the  xterm  window  to  the  bottom of the stacking
                    order.

               MaximizeWin (9)
                    Maximize window (i.e., resize to screen size).

               FullscreenWin (10)
                    Use full screen (i.e.,  resize  to  screen  size,  without
                    window decorations).

               MinimizeWin (2)
                    Iconify window.

               PopTitle (23)
                    Pop title from internal stack.

               PushTitle (22)
                    Push title to internal stack.

               RaiseWin (5)
                    Raise the xterm window to the front of the stacking order.

               RefreshWin (7)
                    Refresh the xterm window.

               RestoreWin (1)
                    De-iconify window.

               SetChecksum
                    Modify algorithm for reporting checksum of characters in a
                    rectangular region.

               SetSelection
                    Set selection data.

               SetWinLines
                    Resize to a given number of lines, at least 24.

               SetWinPosition (3)
                    Move window to given coordinates.

               SetWinSizeChars (8)
                    Resize the text area to given size in characters.

               SetWinSizePixels (4)
                    Resize the xterm window to given size in pixels.

               SetXprop
                    Set X property on top-level window.

       dynamicColors (class DynamicColors)
               Specifies  whether  or  not  escape  sequences to change colors
               assigned to different attributes are recognized.

       eightBitControl (class EightBitControl)
               Specifies whether or not control sequences sent by the terminal
               should  be  eight-bit  characters  or  escape  sequences.   The
               default is ?false?.

       eightBitInput (class EightBitInput)
               If  ?true?,  Meta  characters (a single-byte character combined
               with the  Meta  modifier  key)  input  from  the  keyboard  are
               presented  as  a  single  character,  modified according to the
               eightBitMeta  resource.   If  ?false?,  Meta   characters   are
               converted  into  a  two-character  sequence  with the character
               itself preceded by ESC.  The default is ?true?.

               The metaSendsEscape and altSendsEscape resources  may  override
               this  feature.   Generally  keyboards do not have a key labeled
               ?Meta?, but ?Alt? keys are common, and they are  conventionally
               used  for  ?Meta?.  If they were synonymous, it would have been
               reasonable to name this  resource  ?altSendsEscape?,  reversing
               its  sense.   For  more  background  on  this, see the meta(3x)
               function in curses.

               Note that the Alt key is not necessarily the same as  the  Meta
               modifier.   The  xmodmap  utility  lists your key modifiers.  X
               defines modifiers for shift, (caps) lock and control,  as  well
               as 5 additional modifiers which are generally used to configure
               key modifiers.  Xterm inspects the same information to find the
               modifier  associated  with either Meta key (left or right), and
               uses that key as the Meta modifier.   It  also  looks  for  the
               NumLock key, to recognize the modifier which is associated with
               that.

               If  your  xmodmap configuration uses the same keycodes for Alt-
               and Meta-keys, xterm will only  see  the  Alt-key  definitions,
               since  those  are  tested  before Meta-keys.  NumLock is tested
               first.  It is important to keep these keys distinct;  otherwise
               some of xterm's functionality is not available.

               The  eightBitInput  resource  is  tested  at  startup time.  If
               ?true?, the xterm tries to put the terminal  into  8-bit  mode.
               If  ?false?,  on  startup, xterm tries to put the terminal into
               7-bit mode.  For  some  configurations  this  is  unsuccessful;
               failure  is  ignored.  After startup, xterm does not change the
               terminal between 8-bit and 7-bit mode.

               As originally implemented in X11, the resource  value  did  not
               change after startup.  However (since patch #216 in 2006) xterm
               can  modify eightBitInput after startup via a control sequence.
               The corresponding terminfo capabilities smm (set meta mode) and
               rmm (reset meta mode) have been recognized  by  bash  for  some
               time.   Interestingly  enough,  bash's  notion  of  ?meta mode?
               differs from the standard definition (in the terminfo  manual),
               which  describes  the  change to the eighth bit of a character.
               It happens that bash views ?meta mode?  as  the  ESC  character
               that  xterm  puts before a character when a special meta key is
               pressed.   bash's  early  documentation  talks  about  the  ESC
               character and ignores the eighth bit.

       eightBitMeta (class EightBitMeta)
               This  controls  the  way  xterm  modifies  the  eighth bit of a
               single-byte key when the eightBitInput resource  is  set.   The
               default is ?locale?.

               The  resource  value  is a string, evaluated as a boolean after
               startup.

               false
                    The key is sent unmodified.

               locale
                    The key is modified only  if  the  locale  uses  eight-bit
                    encoding.

               true The key is sent modified.

               never
                    The key is always sent unmodified.

               Except   for  the  never  choice,  xterm  honors  the  terminfo
               capabilities smm (set meta mode) and  rmm  (reset  meta  mode),
               allowing the feature to be turned on or off dynamically.

               If  eightBitMeta  is  enabled when the locale uses UTF-8, xterm
               encodes the value as UTF-8 (since patch #183 in 2003).

       eightBitOutput (class EightBitOutput)
               Specifies whether or not eight-bit  characters  sent  from  the
               host  should  be  accepted as is or stripped when printed.  The
               default is ?true?, which means that they are accepted as is.

       eightBitSelectTypes (class EightBitSelectTypes)
               Override   xterm's   default   selection   target   list   (see
               SELECT/PASTE)  for selections in normal (ISO-8859-1) mode.  The
               default is an empty string, i.e., ??, which does  not  override
               anything.

       eraseSavedLines (class EraseSavedLines)
               Specifies  whether  or  not  to  allow xterm extended ED/DECSED
               control sequences to erase the saved-line buffer.  The  default
               is ?true?.

       faceName (class FaceName)
               Specify  the  pattern  for  scalable  fonts  selected  from the
               FreeType library if support for that library was compiled  into
               xterm.  There is no default value.

               One  or  more  fonts can be specified, separated by commas.  If
               prefixed with ?x:? or ?x11:? the specification applies  to  the
               XLFD   font   resource.    A  ?xft:?  prefix  is  accepted  but
               unnecessary since a missing prefix for faceName means  that  it
               will be used for TrueType.  For example,

                   XTerm*faceName: x:fixed,xft:Bitstream Vera Sans Mono

               Two  TrueType fonts can be specified in this way.  The first is
               the primary font; the second acts as a manual override  to  the
               fontconfig fontset.

               If  no  faceName resource is specified, or if there is no match
               for both TrueType normal and bold fonts, xterm  uses  the  XLFD
               (bitmap) font and related resources.

               It  is  possible to select suitable bitmap fonts using a script
               such as this:

                   #!/bin/sh
                   FONT=`xfontsel -print`
                   test -n "$FONT" && xfd -fn "$FONT"

               However (even though xfd  accepts  a  ?-fa?  option  to  denote
               FreeType  fonts), xfontsel has not been similarly extended.  As
               a workaround, you may try

                   fc-list :scalable=true:spacing=mono: family

               to find a list of scalable fixed-pitch fonts which may be  used
               for the faceName resource value.

       faceNameDoublesize (class FaceNameDoublesize)
               Specify  a  double-width  scalable  font  for  cases  where  an
               application requires this, e.g., in CJK applications.  There is
               no default value.

               Like the faceName resource, this  allows  one  or  more  comma-
               separated  font  specifications  to  be  applied  to  the  wide
               TrueType or XLFD fonts.

               If  the  application  uses  double-wide  characters  and   this
               resource  is  not given, xterm will use a scaled version of the
               font given by faceName.

       faceSize (class FaceSize)
               Specify the pointsize for  fonts  selected  from  the  FreeType
               library  if  support  for that library was compiled into xterm.
               The default is ?8.0? On the VT Fonts menu, this corresponds  to
               the Default entry.

               Although  the default is ?8.0?, this may not be the same as the
               pointsize for the default bitmap font, i.e., that assigned with
               the -fn option, or the font resource.   The  default  value  of
               faceSize  is  chosen  to  match  the  size of the ?fixed? font,
               making switching between bitmap and TrueType fonts via the font
               menu give comparable sizes for the window.  If your -fn  option
               uses  a  different  pointsize,  you  might  want  to adjust the
               faceSize resource to match.

               You can specify the pointsize for TrueType fonts selected  with
               the other size-related menu entries such as Medium, Huge, etc.,
               by  using  one of the following resource values.  If you do not
               specify a value, they default to ?0.0?, which causes  xterm  to
               use  the ratio of font sizes from the corresponding bitmap font
               resources to obtain a TrueType pointsize.

               If all of the faceSize resources are set, then xterm  will  use
               this  information to determine the next smaller/larger TrueType
               font for the larger-vt-font()  and  smaller-vt-font()  actions.
               If any are not set, xterm will use only the areas of the bitmap
               fonts.

       faceSize1 (class FaceSize1)
               Specifies the pointsize of the first alternative font.

       faceSize2 (class FaceSize2)
               Specifies the pointsize of the second alternative font.

       faceSize3 (class FaceSize3)
               Specifies the pointsize of the third alternative font.

       faceSize4 (class FaceSize4)
               Specifies the pointsize of the fourth alternative font.

       faceSize5 (class FaceSize5)
               Specifies the pointsize of the fifth alternative font.

       faceSize6 (class FaceSize6)
               Specifies the pointsize of the sixth alternative font.

       faceSize7 (class FaceSize7)
               Specifies the pointsize of the seventh alternative font.

       faintIsRelative (class FaintIsRelative)
               Faint colors are derived from the current text color, e.g., the
               ANSI  colors,  by  scaling  the red, green and blue components.
               Use this resource to specify whether that is done  relative  to
               the  current  background  color,  or as an absolute value.  The
               default is ?false?.

       fastScroll (class FastScroll)
               Modifies the effect of jump scroll (jumpScroll) by  suppressing
               screen refreshes for the special case when output to the screen
               has  completely  shifted  the  contents  off-screen.  Likewise,
               screen refreshes for related actions, e.g.,  carriage  returns,
               are suppressed.

               For  instance,  cat'ing  a  large  file  to the screen normally
               results in a large number of screen refreshes.  By  suppressing
               the corresponding refreshes, scrolling speed improves.

               The default is ?true?.

       font (class Font)
               Specifies the name of the normal font.  The default is ?fixed?.

               See  the discussion of the locale resource, which describes how
               this font may be overridden.

               NOTE: some resource files use patterns such as

                   *font: fixed

               which are overly broad, affecting both

                   xterm.vt100.font

               and

                   xterm.vt100.utf8Fonts.font

               which is probably not what you intended.

       font1 (class Font1)
               Specifies the name of the first alternative font, corresponding
               to ?Unreadable? in the standard menu.

       font2 (class Font2)
               Specifies  the   name   of   the   second   alternative   font,
               corresponding to ?Tiny? in the standard menu.

       font3 (class Font3)
               Specifies the name of the third alternative font, corresponding
               to ?Small? in the standard menu.

       font4 (class Font4)
               Specifies   the   name   of   the   fourth   alternative  font,
               corresponding to ?Medium? in the standard menu.

       font5 (class Font5)
               Specifies the name of the fifth alternative font, corresponding
               to ?Large? in the standard menu.

       font6 (class Font6)
               Specifies the name of the sixth alternative font, corresponding
               to ?Huge? in the standard menu.

       font7 (class Font7)
               Specifies  the  name   of   the   seventh   alternative   font,
               corresponding to ?Enormous? in the standard menu.

       fontDoublesize (class FontDoublesize)
               Specifies  whether  xterm should attempt to use font scaling to
               draw double-sized characters.  Some older font  servers  cannot
               do  this  properly,  will  return misleading font metrics.  The
               default is ?true?.  If disabled, xterm  will  simulate  double-
               sized  characters  by  drawing  normal  characters  with spaces
               between them.

       fontWarnings (class FontWarnings)
               Specify whether xterm should report an error  if  it  fails  to
               load a font:

               0    Never report an error (though the X libraries may).

               1    Report  an  error if the font name was given as a resource
                    setting.

               2    Always report an error on failure to load a font.

               The default is ?1?.

       forceBoxChars (class ForceBoxChars)
               Specifies whether xterm should assume the normal and bold fonts
               have VT100 line-drawing characters:

               ?   The fixed-pitch  ISO-8859-*-encoded  fonts  used  by  xterm
                   normally  have the VT100 line-drawing glyphs in cells 1?31.
                   Other fixed-pitch fonts may be more  attractive,  but  lack
                   these glyphs.

               ?   When  using  an ISO-10646-1 font and the wideChars resource
                   is true, xterm uses the  Unicode  glyphs  which  match  the
                   VT100 line-drawing glyphs.

               If  ?false?,  xterm  checks  for missing glyphs in the font and
               makes line-drawing characters directly as needed.   If  ?true?,
               xterm  assumes  the  font  does  not  contain  the line-drawing
               characters, and draws them directly.  The default is ?false?.

               The VT100 line-drawing character set (also  known  as  the  DEC
               Special Character and Line Drawing Set) is shown in this table.
               It  includes  a  few  special characters which are not used for
               drawing lines:
               Cell   Unicode   Description
               ????????????????????????????????????????????????????????????
               0      U+25AE    black vertical rectangle
               1      U+25C6    black diamond
               2      U+2592    medium shade
               3      U+2409    symbol for horizontal tabulation
               4      U+240C    symbol for form feed
               5      U+240D    symbol for carriage return
               6      U+240A    symbol for line feed
               7      U+00B0    degree sign
               8      U+00B1    plus-minus sign
               9      U+2424    symbol for newline
               10     U+240B    symbol for vertical tabulation
               11     U+2518    box drawings light up and left
               12     U+2510    box drawings light down and left
               13     U+250C    box drawings light down and right
               14     U+2514    box drawings light up and right
               15     U+253C    box drawings light vertical and horizontal
               16     U+23BA    box drawings scan 1
               17     U+23BB    box drawings scan 3
               18     U+2500    box drawings light horizontal
               19     U+23BC    box drawings scan 7
               20     U+23BD    box drawings scan 9
               21     U+251C    box drawings light vertical and right
               22     U+2524    box drawings light vertical and left
               23     U+2534    box drawings light up and horizontal
               24     U+252C    box drawings light down and horizontal
               25     U+2502    box drawings light vertical
               26     U+2264    less-than or equal to
               27     U+2265    greater-than or equal to
               28     U+03C0    greek small letter pi
               29     U+2260    not equal to
               30     U+00A3    pound sign
               31     U+00B7    middle dot
               ????????????????????????????????????????????????????????????

       forcePackedFont (class ForcePackedFont)
               Specifies whether xterm should use the maximum or minimum glyph
               width when displaying using a bitmap  font.   Use  the  maximum
               width  to help with proportional fonts.  The default is ?true?,
               denoting the minimum width.

       forceXftHeight (class ForceXftHeight)
               Specifies whether xterm should use the given font  metrics  for
               TrueType  fonts,  or  amend the ascent/descent to total no more
               than the given font-height.  This optional feature is  used  to
               work around inconsistencies in FreeType's rounding computation.
               The default is ?false?, denoting the given metrics.

       foreground (class Foreground)
               Specifies  the  color to use for displaying text in the window.
               Setting the class name instead of the instance name is an  easy
               way  to  have everything that would normally appear in the text
               color change color.  The default is ?XtDefaultForeground?.

       formatOtherKeys (class FormatOtherKeys)
               Overrides the format of the  escape  sequence  used  to  report
               modified keys with the modifyOtherKeys resource.

               0  send   modified  keys  as  parameters  for  function-key  27
                  (default).

               1  send modified keys as parameters for CSI u.

       freeBoldBox (class FreeBoldBox)
               Specifies whether xterm should assume the  bounding  boxes  for
               normal  and  bold  fonts  are  compatible.   If  ?false?, xterm
               compares them and will reject choices of bold fonts that do not
               match the size of the normal font.   The  default  is  ?false?,
               which means that the comparison is performed.

       geometry (class Geometry)
               Specifies  the preferred size and position of the VTxxx window.
               There is no default for this resource.

       highlightColor (class HighlightColor)
               Specifies the color to  use  for  the  background  of  selected
               (highlighted)  text.   If  not  specified  (i.e.,  matching the
               default foreground), reverse video is  used.   The  default  is
               ?XtDefaultForeground?.

       highlightColorMode (class HighlightColorMode)
               Specifies  whether  xterm  should  use  highlightTextColor  and
               highlightColor to override the  reversed  foreground/background
               colors in a selection.  The default is unspecified: at startup,
               xterm checks if those resources are set to something other than
               the  default  foreground  and  background colors.  Setting this
               resource disables the check.

               The following table shows the interaction of  the  highlighting
               resources, abbreviated as shown to fit in this page:

               HCM
                  highlightColorMode

               HR highlightReverse

               HBG
                  highlightColor

               HFG
                  highlightTextColor

               HCM       HR      HBG       HFG       Highlight
               ????????????????????????????????????????????????
               false     false   default   default   bg/fg
               false     false   default   set       bg/fg
               false     false   set       default   fg/HBG
               false     false   set       set       fg/HBG
               ????????????????????????????????????????????????
               false     true    default   default   bg/fg
               false     true    default   set       bg/fg
               false     true    set       default   fg/HBG
               false     true    set       set       fg/HBG
               ????????????????????????????????????????????????
               true      false   default   default   bg/fg
               true      false   default   set       HFG/fg
               true      false   set       default   bg/HBG
               true      false   set       set       HFG/HBG
               ????????????????????????????????????????????????
               true      true    default   default   bg/fg
               true      true    default   set       HFG/fg
               true      true    set       default   fg/HBG
               true      true    set       set       HFG/HBG
               ????????????????????????????????????????????????
               default   false   default   default   bg/fg
               default   false   default   set       bg/fg
               default   false   set       default   fg/HBG
               default   false   set       set       HFG/HBG
               ????????????????????????????????????????????????
               default   true    default   default   bg/fg
               default   true    default   set       bg/fg
               default   true    set       default   fg/HBG
               default   true    set       set       HFG/HBG
               ????????????????????????????????????????????????

       highlightReverse (class HighlightReverse)
               Specifies whether xterm should reverse the selection foreground
               and  background  colors  when selecting text with reverse-video
               attribute.   This  applies  only  to  the  highlightColor   and
               highlightTextColor  resources,  e.g., to match the color scheme
               of xwsh.  If ?true?, xterm reverses  the  colors,  If  ?false?,
               xterm does not reverse colors, The default is ?true?.

       highlightSelection (class HighlightSelection)
               Tells xterm whether to highlight all of the selected positions,
               or only the selected text:

               ?   If   ?false?,  selecting  with  the  mouse  highlights  all
                   positions on  the  screen  between  the  beginning  of  the
                   selection and the current position.

               ?   If ?true?, xterm highlights only the positions that contain
                   text that can be selected.

               The default is ?false?.

               Depending  on  the  way  your applications write to the screen,
               there may be trailing blanks on a line.  Xterm stores  data  as
               it  is  shown  on  the screen.  Erasing the display changes the
               internal state of each cell so it is not considered a blank for
               the purpose of selection.  Blanks written since the last  erase
               are  selectable.  If you do not wish to have trailing blanks in
               a selection, use the trimSelection resource.

       highlightTextColor (class HighlightTextColor)
               Specifies the color to  use  for  the  foreground  of  selected
               (highlighted)  text.   If  not  specified  (i.e.,  matching the
               default background), reverse video is  used.   The  default  is
               ?XtDefaultBackground?.

       hpLowerleftBugCompat (class HpLowerleftBugCompat)
               Specifies  whether  to  work  around  a  bug in HP's xdb, which
               ignores termcap and always sends ESC F to  move  to  the  lower
               left  corner.   ?true?  causes  xterm  to  interpret ESC F as a
               request to move to the lower left corner of  the  screen.   The
               default is ?false?.

       i18nSelections (class I18nSelections)
               If  false,  xterm will not request the targets COMPOUND_TEXT or
               TEXT.  The default is ?true?.  It may be set to false in  order
               to work around ICCCM violations by other X clients.

       iconBorderColor (class BorderColor)
               Specifies  the  border color for the active icon window if this
               feature is compiled into xterm.  Not all window  managers  will
               make the icon border visible.

       iconBorderWidth (class BorderWidth)
               Specifies  the  border width for the active icon window if this
               feature is compiled into xterm.  The default is ?2?.   Not  all
               window managers will make the border visible.

       iconFont (class IconFont)
               Specifies  the  font  for  the miniature active icon window, if
               this feature is compiled into xterm.  The default is ?nil2?.

       indicatorFormat (class IndicatorFormat)
               When displaying the status line using the indicator mode (i.e.,
               selecting DECSSDT line type 1), format the  status  using  this
               resource.

               The  default  value  of  the  resource  displays the version of
               xterm, the cursor position and the time/date:

                   ?%{version%}  %{position%}  %{unixtime%}?

               If a ?%? marker does not match any of the three special  tokens
               used  in  the  default resource setting, xterm uses strftime to
               interpret it.

       initialFont (class InitialFont)
               Specifies which of the VT100 fonts to  use  initially.   Values
               are  the  same  as  for the set-vt-font action.  The default is
               ?d?, i.e., ?default?.

       inputMethod (class InputMethod)
               Tells xterm which type of input method to  use.   There  is  no
               default method.

       internalBorder (class BorderWidth)
               Specifies  the  number of pixels between the characters and the
               window border.  The default is ?2?.

       italicULMode (class ColorAttrMode)
               Specifies  whether  characters  with  the  underline  attribute
               should  be  displayed  in  an  italic  font  or  as  underlined
               characters.  It is implemented only for TrueType fonts.

       jumpScroll (class JumpScroll)
               Specifies whether or not jump  scroll  should  be  used.   This
               corresponds  to the VT102 DECSCLM private mode.  The default is
               ?true?.  See fastScroll for a variation.

       keepClipboard (class KeepClipboard)
               Specifies whether xterm will reuse the selection data which  it
               copied  to  the  clipboard rather than asking the clipboard for
               its current contents when told to provide the  selection.   The
               default is ?false?.

               If  compiled  into  xterm, the menu entry Keep Clipboard allows
               you to change this at runtime.

       keepSelection (class KeepSelection)
               Specifies whether xterm will keep the selection even after  the
               selected  area was touched by some output to the terminal.  The
               default is ?true?.

               The menu entry Keep Selection allows  you  to  change  this  at
               runtime.

       keyboardDialect (class KeyboardDialect)
               Specifies  the initial keyboard dialect, as well as the default
               value when the terminal is reset.  The value given is the  same
               as  the  final  character in the control sequences which change
               character sets.  The default is ?B?, which  corresponds  to  US
               ASCII.

       limitFontsets (class LimitFontsets)
               Limits  the  number  of TrueType fallback fonts (i.e., fontset)
               which can be tested.  The default is ?50?.  No more than  ?255?
               will be scanned.

               This  limits  the  number of fallback fonts which xterm uses to
               display  characters.   Because  TrueType  fonts  typically  are
               small,  xterm may open several fonts for good coverage, and may
               open additional fonts to obtain information.  You can see which
               font-files xterm opens  by  setting  the  environment  variable
               XFT_DEBUG to 3.  The Xft library and xterm write this debugging
               trace to the standard output.

               Set this to ?0? to disable fallbacks entirely.

       limitFontHeight (class LimitFontHeight)
               When scaling a TrueType font to provide the parts for a double-
               high  character,  xterm  compares  the  scaled  font  with  the
               original to ensure that it is taller.

               The default is ?10? (percent).

       limitFontWidth (class LimitFontWidth)
               When looking for fallback fonts, xterm checks to see  that  the
               the  character to be displayed is the same width as the primary
               font.  If a character extends outside the font's bounding  box,
               xterm will clip it, to fit.

               This  resource  controls  the amount by which the character can
               extend outside its bounding box before xterm looks further  for
               a better font.

               This  resource  is  also  used  in  scaling  TrueType fonts for
               double-wide characters, like  limitFontHeight  for  double-wide
               characters.

               The default is ?10? (percent).

       limitResize (class LimitResize)
               Limits  resizing  of the screen via control sequence to a given
               multiple of the display dimensions.  The default is ?1?.

       limitResponse (class LimitResponse)
               Limits the buffer-size  used  when  xterm  replies  to  various
               control  sequences.   The default is ?1024?.  The minimum value
               is ?256?.

       locale (class Locale)
               Specifies how to use luit, an encoding converter between  UTF-8
               and  locale  encodings.  The resource value (ignoring case) may
               be:

               true
                   Xterm  will  use  the  encoding  specified  by  the  users'
                   LC_CTYPE locale (i.e., LC_ALL, LC_CTYPE, or LANG variables)
                   as  far  as  possible.  This is realized by always enabling
                   UTF-8 mode and invoking luit in non-UTF-8 locales.

               medium
                   Xterm will follow users' LC_CTYPE locale  only  for  UTF-8,
                   east  Asian, and Thai locales, where the encodings were not
                   supported by conventional 8bit mode  with  changing  fonts.
                   For other locales, xterm will use conventional 8bit mode.

               checkfont
                   If  mini-luit is compiled-in, xterm will check if a Unicode
                   font has been specified.  If so, it checks if the character
                   encoding for  the  current  locale  is  POSIX,  Latin-1  or
                   Latin-9, uses the appropriate mapping to support those with
                   the  Unicode font.  For other encodings, xterm assumes that
                   UTF-8 encoding is required.

               false
                   Xterm  will  use  conventional  8bit  mode  or  UTF-8  mode
                   according to utf8 resource or -u8 option.

               Any other value, e.g., ?UTF-8? or ?ISO8859-2?, is assumed to be
               an encoding name; luit will be invoked to support the encoding.
               The  actual  list  of supported encodings depends on luit.  The
               default is ?medium?.

               Regardless of your locale and encoding, you need an ISO-10646-1
               font to display the result.  Your configuration may not include
               this font, or locale-support by xterm may not be needed.

               At  startup,  xterm  uses  a  mechanism   equivalent   to   the
               load-vt-fonts(utf8Fonts, Utf8Fonts)  action  to  load font name
               subresources of the VT100 widget.  That is,  resource  patterns
               such  as  ?*vt100.utf8Fonts.font?  will be loaded, and (if this
               resource  is  enabled),  override  the  normal  fonts.   If  no
               subresources are found, the normal fonts such as ?*vt100.font?,
               etc., are used.

               For instance, you could have this in your resource file:

                   *VT100.font: 12x24
                   *VT100.utf8Fonts.font:9x15

               When  started  with  a  UTF-8 locale, xterm would use 9x15, but
               allow you to switch to the 12x24  font  using  the  menu  entry
               ?UTF-8 Fonts?.

               The  resource  files  distributed  with  xterm  use ISO-10646-1
               fonts, but do not rely on them unless you are using the  locale
               mechanism.

       localeFilter (class LocaleFilter)
               Specifies  the  file  name  for  the encoding converter from/to
               locale encodings and UTF-8 which is used with the -lc option or
               locale resource.  The help message shown by ?xterm -help? lists
               the default value, which depends on your system configuration.

               If the encoding converter requires command-line parameters, you
               can add those after the command, e.g.,

                   *localeFilter: xterm-filter -p

               Alternatively, you may put  those  parameters  within  a  shell
               script to execute the converter, and set this resource to point
               to the shell script.

               When  using  a  locale-filter, e.g., with the -e option, or the
               shell, xterm first tries passing control via that  filter.   If
               it  fails,  xterm  will retry without the locale-filter.  Xterm
               warns about the failure before retrying.

       logFile (class Logfile)
               Specify  the  name  for  xterm's  log  file.   If  no  name  is
               specified,  xterm will generate a name when logging is enabled,
               as described in the -l option.

       logInhibit (class LogInhibit)
               If ?true?, prevent the  logging  feature  from  being  enabled,
               whether by the command-line option -l, or the menu entry Log to
               File.  The default is ?false?.

       logging (class Logging)
               If  ?true?,  (and  if logInhibit is not set) enable the logging
               feature.  This resource is set/updated by the -l option and the
               menu entry Log to File.  The default is ?false?.

       loginShell (class LoginShell)
               Specifies whether or not the shell to  be  run  in  the  window
               should be started as a login shell.  The default is ?false?.

       marginBell (class MarginBell)
               Specifies  whether or not the bell should be rung when the user
               types near the right margin.  The default is ?false?.

       maxGraphicSize (class MaxGraphicSize)
               If xterm is configured to support ReGIS or SIXEL graphics, this
               resource controls the maximum size of  a  graph  which  can  be
               displayed.

               The default is ?1000x1000? (given as width by height).

               If the resource is ?auto? then xterm will use the decGraphicsID
               resource (or decTerminalID if that is not set):
               Result    decGraphicsID
               ????????????????????????
               768x400             125
               800x460             240
               800x460             241
               800x480             330
               800x480             340
               860x750             382
               800x480           other

       maxStringParse (class MaxStringParse)
               Xterm's  state  parser  recognizes  several  types  of  control
               strings which can contain text, e.g.,

               APC (Application Program Command),
               DCS (Device Control String),
               OSC (Operating System Command),
               PM (Privacy Message), and
               SOS (Start of String),

               Xterm reads these strings,  accumulating  them  into  a  buffer
               until  they  are  properly  terminated.   At  that point, xterm
               interprets the strings.  If they happen to be DCS  commands  to
               draw  ReGIS or SIXEL images, these strings may be large, in the
               hundreds of kilobytes.  A few OSC commands may be as  large  as
               10 kilobytes.

               This  resource  sets a limit on the size of the buffer used for
               these strings.  The default is ?600000? based on  the  features
               which  are configured for xterm.  Control strings which require
               larger buffer size are ignored.

       metaSendsEscape (class MetaSendsEscape)
               Tells xterm what to do with input-characters modified by Meta:

               ?   If ?true?, Meta characters (a character combined  with  the
                   Meta  modifier  key)  are  converted  into  a two-character
                   sequence with the character itself preceded by  ESC.   This
                   applies  as  well to function key control sequences, unless
                   xterm sees that Meta is used in your key translations.

               ?   If ?false?, Meta characters input  from  the  keyboard  are
                   handled according to the eightBitInput resource.

               The default is ?False?.

       mkSamplePass (class MkSamplePass)
               If  mkSampleSize  is  nonzero,  and  mkWidth (and cjkWidth) are
               false, on startup xterm compares its  built-in  tables  to  the
               system's wide character width data to decide if it will use the
               system's  data.   It  tests  the  first  mkSampleSize character
               values, and allows up to  mkSamplePass  mismatches  before  the
               test fails.  The default (for the allowed number of mismatches)
               is 655 (one percent of the default value for mkSampleSize).

       mkSampleSize (class MkSampleSize)
               With  mkSamplePass,  this  specifies  a  startup  test used for
               initializing wide character width  calculations.   The  default
               (number of characters to check) is 65536.

       mkWidth (class MkWidth)
               Specifies  whether  xterm  should use a built-in version of the
               wide  character  width  calculation.   See  also  the  cjkWidth
               resource which can override this.  The default is ?false?.

               Here  is a summary of the resources which control the choice of
               wide character width calculation:
               cjkWidth   mkWidth   Action
               ???????????????????????????????????????????????????????????????
               false      false     use system tables subject to mkSamplePass
               false      true      use built-in tables
               true       false     use built-in CJK tables
               true       true      use built-in CJK tables

               To disable mkWidth, and  use  the  system's  tables,  set  both
               mkSampleSize  and  mkSamplePass  to  ?0?.   Doing that may make
               xterm more consistent with applications running in  xterm,  but
               may  omit  some  font glyphs whose width correctly differs from
               the system's character tables.

       modifyCursorKeys (class ModifyCursorKeys)
               Tells how to handle the special case  where  Control-,  Shift-,
               Alt-  or  Meta-modifiers  are  used  to  add a parameter to the
               escape sequence returned by a cursor-key.  The default is ?2?:

               -1   disables the feature.

               0    uses the old/obsolete behavior, i.e., the modifier is  the
                    first parameter.

               1    prefixes modified sequences with CSI.

               2    forces the modifier to be the second parameter if it would
                    otherwise be the first.

               3    marks the sequence with a ?>? to hint that it is private.

       modifyFunctionKeys (class ModifyFunctionKeys)
               Tells  how  to  handle the special case where Control-, Shift-,
               Alt- or Meta-modifiers are used  to  add  a  parameter  to  the
               escape  sequence  returned  by  a (numbered) function-key.  The
               default  is  ?2?.   The  resource   values   are   similar   to
               modifyCursorKeys:

               -1   permits  the  user  to use shift- and control-modifiers to
                    construct function-key strings using the  normal  encoding
                    scheme.

               0    uses  the old/obsolete behavior, i.e., the modifier is the
                    first parameter.

               1    prefixes modified sequences with CSI.

               2    forces the modifier to be the second parameter if it would
                    otherwise be the first.

               3    marks the sequence with a ?>? to hint that it is private.

               If modifyFunctionKeys is zero, xterm uses Control-  and  Shift-
               modifiers to allow the user to construct numbered function-keys
               beyond the set provided by the keyboard:

               Control
                    adds the value given by the ctrlFKeys resource.

               Shift
                    adds twice the value given by the ctrlFKeys resource.

               Control/Shift
                    adds   three  times  the  value  given  by  the  ctrlFKeys
                    resource.

       modifyKeyboard (class ModifyKeyboard)
               Normally xterm makes a special case regarding modifiers (shift,
               control, etc.)  to handle special keyboard layouts (legacy  and
               vt220).   This  is done to provide compatible keyboards for DEC
               VT220 and related terminals that  implement  user-defined  keys
               (UDK).

               The  bits of the resource value selectively enable modification
               of the given category when these keyboards are  selected.   The
               default is ?0?:

               0    The  legacy/vt220  keyboards  interpret  only the Control-
                    modifier when constructing numbered function-keys.   Other
                    special keys are not modified.

               1    allows modification of the numeric keypad

               2    allows modification of the editing keypad

               4    allows  modification  of  function-keys,  overrides use of
                    Shift-modifier for UDK.

               8    allows modification of other special keys

       modifyOtherKeys (class ModifyOtherKeys)
               Like modifyCursorKeys,  tells  xterm  to  construct  an  escape
               sequence  for  ordinary (i.e., ?other?) keys (such as ?2?) when
               modified by Shift-, Control-,  Alt-  or  Meta-modifiers.   This
               feature does not apply to special keys, i.e., cursor-, keypad-,
               function-  or  control-keys which are labeled on your keyboard.
               Those have key symbols which XKB identifies uniquely.

               For example, this feature does not apply  to  special  control-
               keys  (e.g.,  Escape, Tab, Enter, Backspace) Other control keys
               (e.g.,  Control-I,  Control-M,  Control-H)  may   send   escape
               sequences when this feature is enabled.

               The default is ?0?:

               0    disables this feature.

               1    enables  this feature for keys except for those with well-
                    known behavior, e.g.,  Tab,  Backarrow  and  some  special
                    control  character  cases  which  are  built  into the X11
                    library, e.g., Control-Space to make a NUL,  or  Control-3
                    to make an Escape character.

                    Except for those special cases built into the X11 library,
                    the  Shift-  and  Control- modifiers are treated normally.
                    The Alt- and Meta- modifiers do not cause  xterm  to  send
                    escape  sequences.   Those  modifier  keys are interpreted
                    according to other resources,  e.g.,  the  metaSendsEscape
                    resource.

               2    enables  this  feature  for  keys including the exceptions
                    listed.  Xterm ignores the special cases  built  into  the
                    X11 library.  Any shifted (modified) ordinary key sends an
                    escape sequence.  The Alt- and Meta- modifiers cause xterm
                    to send escape sequences.

               The  Xterm FAQ has an extended discussion of this feature, with
               examples:

               https://invisible-island.net/xterm/modified-keys.html

       multiClickTime (class MultiClickTime)
               Specifies the maximum time in milliseconds between  multi-click
               select events.  The default is ?250? milliseconds.

       multiScroll (class MultiScroll)
               Specifies   whether   or   not   scrolling   should   be   done
               asynchronously.  The default is ?false?.

       nMarginBell (class Column)
               Specifies the number of characters from  the  right  margin  at
               which  the  margin  bell  should  be  rung, when enabled by the
               marginBell resource.  The default is ?10?.

       nameKeymap (class NameKeymap)
               See the discussion of the keymap() action.

       nextEventDelay (class NextEventDelay)
               Specifies a delay time in milliseconds before checking for  new
               X events.  The default is ?1?.

       numColorRegisters (class NumColorRegisters)
               If xterm is configured to support ReGIS or SIXEL graphics, this
               specifies the number of color-registers which are available.

               If   this  resource  is  not  specified,  xterm  uses  a  value
               determined by the decTerminalID resource:
               Result   decTerminalID
               ???????????????????????
                    4             125
                    4             240
                    4             241
                    4             330
                   16             340
                    2             382
                 1024           other

       numLock (class NumLock)
               If ?true?, xterm checks if NumLock is used as a  modifier  (see
               xmodmap(1)).   If  so,  this  modifier  is used to simplify the
               logic when implementing special  NumLock  for  the  sunKeyboard
               resource.   Also  (when sunKeyboard is false), similar logic is
               used to find the modifier associated with the  left  and  right
               Alt keys.  The default is ?true?.

       oldXtermFKeys (class OldXtermFKeys)
               If  ?true?,  xterm  will use old-style (X11R5) escape sequences
               for function keys F1 to F4, for compatibility with X Consortium
               xterm.  Otherwise, it uses the VT100 codes for PF1 to PF4.  The
               default is ?false?.

               Setting this resource  has  the  same  effect  as  setting  the
               keyboardType  to  legacy.   The  keyboardType  resource  is the
               preferred mechanism for selecting this mode.

               The old-style escape sequences resemble VT220 keys, but  appear
               to have been invented for xterm in X11R4.

       on2Clicks (class On2Clicks)

       on3Clicks (class On3Clicks)

       on4Clicks (class On4Clicks)

       on5Clicks (class On5Clicks)
               Specify  selection  behavior  in  response  to  multiple  mouse
               clicks.   A  single  mouse  click  is  always  interpreted   as
               described  in  the  Selection  Functions  section  (see POINTER
               USAGE).   Multiple  mouse  clicks  (using  the   button   which
               activates the select-start action) are interpreted according to
               the  resource values of on2Clicks, etc.  The resource value can
               be one of these:

               word
                  Select a ?word? as determined  by  the  charClass  resource.
                  See the CHARACTER CLASSES section.

                  If  the  pointer  is on a ?word? then xterm searches back to
                  the beginning of the word, and then to the end.

                  If the pointer is not on a ?word? then the result depends on
                  whether it is on whitespace (including a newline),  or  past
                  the  end of the line.  In the latter case xterm may select a
                  ?word?  beginning  after  the  newline,  if  there   is   no
                  additional whitespace.

               line
                  Select a line (counting wrapping).

               group
                  Select  a  group of adjacent lines (counting wrapping).  The
                  selection stops on a blank line, and does not extend outside
                  the current page.

               page
                  Select all visible lines, i.e., the page.

               all
                  Select all lines, i.e., including the saved lines.

               regex
                  Select  the  best  match  for  the  POSIX  extended  regular
                  expression (ERE) which follows in the resource value:

                  ?   Xterm  matches  the  regular  expression  against a byte
                      array for the entire (possibly wrapped) line.  That byte
                      array may be UTF-8 or ISO-8859-1, depending on the  mode
                      in which xterm is running.

                  ?   Xterm  steps  through  each  byte-offset  in this array,
                      keeping track of the best (longest) match.  If more than
                      one match ties for the  longest  length,  the  first  is
                      used.

                      Xterm  does this to make it convenient to click anywhere
                      in the area of interest and cause the regular expression
                      to match the entire word, etc.

                  ?   The ?^? and ?$? anchors in a regular  expression  denote
                      the ends of the entire line.

                  ?   If the regular expression contains backslashes ?\? those
                      should be escaped ?\\? because the X libraries interpret
                      backslashes in resource strings.

               none
                  No selection action is associated with this resource.  Xterm
                  interprets  it as the end of the list.  For example, you may
                  use it to disable triple (and higher)  clicking  by  setting
                  on3Clicks to ?none?.

               The  default  values for on2Clicks and on3Clicks are ?word? and
               ?line?, respectively.  There is no default value for  on4Clicks
               or   on5Clicks,  making  those  inactive.   On  startup,  xterm
               determines the  maximum  number  of  clicks  by  the  onXClicks
               resource values which are set.

       openIm (class OpenIm)
               Tells  xterm  whether to open the input method at startup.  The
               default is ?true?.

       pointerColor (class PointerColor)
               Specifies the foreground color of the pointer.  The default  is
               ?XtDefaultForeground?.

       pointerColorBackground (class PointerColorBackground)
               Specifies  the background color of the pointer.  The default is
               ?XtDefaultBackground?.

       pointerFont (class PointerFont)
               Specifies the font to be used  for  the  pointer.   The  shapes
               specified  by  pointerShape  are  glyphs  in  this  font.   The
               resource value default is cursor.

       pointerMode (class PointerMode)
               Specifies when the pointer may be hidden as the user types.  It
               will be redisplayed if the user moves the mouse, or clicks  one
               of its buttons.

               0  never

               1  the  application  running  in  xterm has not activated mouse
                  mode.  This is the default.

               2  always.

       pointerShape (class Cursor)
               Specifies the name of the shape of the pointer.  The default is
               ?xterm?.

               Other shapes can be selected.  Here is a  list  of  the  ?core?
               (i.e., standard) names extracted from <X11/cursorfont.h>:

                   X_cursor,  arrow,  based_arrow_down,  based_arrow_up, boat,
                   bogosity,     bottom_left_corner,      bottom_right_corner,
                   bottom_side,  bottom_tee,  box_spiral,  center_ptr, circle,
                   clock,   coffee_mug,   cross,   cross_reverse,   crosshair,
                   diamond_cross,   dot,  dotbox,  double_arrow,  draft_large,
                   draft_small, draped_box, exchange, fleur,  gobbler,  gumby,
                   hand1, hand2, heart, icon, iron_cross, left_ptr, left_side,
                   left_tee,     leftbutton,    ll_angle,    lr_angle,    man,
                   middlebutton, mouse, pencil, pirate, plus,  question_arrow,
                   right_ptr,  right_side,  right_tee,  rightbutton, rtl_logo,
                   sailboat, sb_down_arrow, sb_h_double_arrow,  sb_left_arrow,
                   sb_right_arrow,  sb_up_arrow,  sb_v_double_arrow,  shuttle,
                   sizing,   spider,   spraycan,   star,    target,    tcross,
                   top_left_arrow,      top_left_corner,     top_right_corner,
                   top_side,  top_tee,  trek,  ul_angle,  umbrella,  ur_angle,
                   watch, xterm

               If  you  are using a cursor theme, expect it to provide about a
               third of those names, while adding others.

       popOnBell (class PopOnBell)
               Specifies whether the window would be raised when Control-G  is
               received.  The default is ?false?.

               If  the  window is iconified, this has no effect.  However, the
               zIconBeep resource provides you with the ability to  see  which
               iconified windows have sounded a bell.

       precompose (class Precompose)
               Tells xterm whether to precompose UTF-8 data into Normalization
               Form   C,   which  combines  commonly-used  accents  onto  base
               characters.  If it does  not  do  this,  accents  are  left  as
               separate characters.  The default is ?true?.

       preeditType (class PreeditType)
               Tells  xterm  which  types of preedit (preconversion) string to
               display.  The default is ?OverTheSpot,Root?.

       printAttributes (class PrintAttributes)
               Specifies whether to print graphic attributes  along  with  the
               text.   A  real  DEC  VTxxx  terminal will print the underline,
               highlighting codes but your printer may not handle these.

               ?   ?0? disables the attributes.

               ?   ?1? prints the normal set of attributes  (bold,  underline,
                   inverse and blink) as VT100-style control sequences.

               ?   ?2? prints ANSI color attributes as well.

               The default is ?1?.

       printFileImmediate (class PrintFileImmediate)
               When  the  print-immediate  action is invoked, xterm prints the
               screen contents directly to a file.  Set this resource  to  the
               prefix  of  the  filename  (a timestamp will be appended to the
               actual name).

               The default is an empty string, i.e.,  ??,  However,  when  the
               print-immediate action is invoked, if the string is empty, then
               ?XTerm? is used.

       printFileOnXError (class PrintFileOnXError)
               If xterm exits with an X error, e.g., your connection is broken
               when  the  server crashes, it can be told to write the contents
               of the screen to a file.   To  enable  the  feature,  set  this
               resource  to  the  prefix  of the filename (a timestamp will be
               appended to the actual name).

               The default is an empty string, i.e., ??, which  disables  this
               feature.   However,  when the print-on-error action is invoked,
               if the string is empty, then ?XTermError? is used.

               These error codes are handled: ERROR_XERROR, ERROR_XIOERROR and
               ERROR_ICEERROR.

       printModeImmediate (class PrintModeImmediate)
               When the print-immediate action is invoked,  xterm  prints  the
               screen   contents   directly  to  a  file.   You  can  use  the
               printModeImmediate resource to tell it to use escape  sequences
               to  reconstruct the video attributes and colors.  This uses the
               same values as the printAttributes resource.   The  default  is
               ?0?.

       printModeOnXError (class PrintModeOnXError)
               Xterm   implements  the  printFileOnXError  feature  using  the
               printer feature, although the output is written directly  to  a
               file.  You can use the printModeOnXError resource to tell it to
               use  escape  sequences  to reconstruct the video attributes and
               colors.  This uses  the  same  values  as  the  printAttributes
               resource.  The default is ?0?.

       printOptsImmediate (class PrintOptsImmediate)
               Specify  the  range of text which is printed to a file when the
               print-immediate action is invoked.

               ?   If zero (0), then this selects the current (visible screen)
                   plus the saved lines, except if  the  alternate  screen  is
                   being  used.   In  that  case, only the alternate screen is
                   selected.

               ?   If nonzero, the bits of this  resource  value  (checked  in
                   descending order) select the range:

                   8  selects the saved lines.

                   4  selects the alternate screen.

                   2  selects the normal screen.

                   1  selects  the  current  screen,  which  can be either the
                      normal or alternate screen.

               The default is ?9?, which selects the  current  visible  screen
               plus  saved  lines,  with  no  special  case for the alternated
               screen.

       printOptsOnXError (class PrintOptsOnXError)
               Specify the range of text which is printed to a file  when  the
               print-on-error  action  is  invoked.   The  resource  value  is
               interpreted the same as in printOptsImmediate.

               The default is ?9?, which selects the  current  visible  screen
               plus  saved  lines,  with  no  special  case for the alternated
               screen.

       printerAutoClose (class PrinterAutoClose)
               If ?true?, xterm will close  the  printer  (a  pipe)  when  the
               application  switches  the  printer  offline  with a Media Copy
               command.  The default is ?false?.

       printerCommand (class PrinterCommand)
               Specifies a shell command to which xterm will open a pipe  when
               the first MC (Media Copy) command is initiated.  The default is
               an  empty  string, i.e., ??.  If the resource value is given as
               an empty string, the printer is disabled.

       printerControlMode (class PrinterControlMode)
               Specifies the printer control mode.  A  ?1?  selects  autoprint
               mode, which causes xterm to print a line from the screen when

               ?   you  move  the  cursor off that line with a line feed, form
                   feed or vertical tab character, or

               ?   an autowrap occurs.

               Autoprint mode is overridden  by  printer  controller  mode  (a
               ?2?),  which  causes  all  of  the output to be directed to the
               printer.  The default is ?0?.

       printerExtent (class PrinterExtent)
               Controls whether a print page function will  print  the  entire
               page  (true),  or only the portion within the scrolling margins
               (false).  The default is ?false?.

       printerFormFeed (class PrinterFormFeed)
               Controls whether a form feed is sent to the printer at the  end
               of a print page function.  The default is ?false?.

       printerNewLine (class PrinterNewLine)
               Controls whether a newline is sent to the printer at the end of
               a print page function.  The default is ?true?.

       privateColorRegisters (class PrivateColorRegisters)
               If xterm is configured to support ReGIS or SIXEL graphics, this
               controls  whether  xterm allocates separate color registers for
               each sixel device control string, e.g.,  for  DECGCI.   If  not
               true,  color  registers  are  allocated  only  once,  when  the
               terminal is reset, and color changes  in  any  graphic   affect
               all graphics.  The default is ?true?.

       quietGrab (class QuietGrab)
               Controls  whether  the  cursor is repainted when NotifyGrab and
               NotifyUngrab event types are received during change  of  focus.
               The default is ?false?.

       regisDefaultFont (class RegisDefaultFont)
               If xterm is configured to support ReGIS graphics, this resource
               tells  xterm  which  font  to  use  if  the ReGIS data does not
               specify one.  No default value is specified;  xterm  accepts  a
               TrueType font specification as in the faceName resource.

               If  no  value  is  specified, xterm draws a bitmap indicating a
               missing character.

       regisScreenSize (class RegisScreenSize)
               If xterm is configured to support ReGIS graphics, this resource
               tells xterm the default size (in pixels)  for  these  graphics,
               which  also  sets the default coordinate space to [0,0] (upper-
               left) and [width,height] (lower-right).

               The application using ReGIS may use the ?A? option of  the  ?S?
               command   to   adjust   the  coordinate  space  or  change  the
               addressable portion of the screen.

               Xterm accepts a special  resource  value  ?auto?,  which  tells
               xterm  to  use the decGraphicsID and decTerminalID resources to
               set the default size based on the hardware  terminal's  limits.
               Those limits are the same as for the maxGraphicSize resource.

               The default is ?auto?.

       renderFont (class RenderFont)
               If  xterm  is built with the Xft library, this controls whether
               the faceName resource is used.  The default is ?default?.

               The resource values are strings, evaluated  as  booleans  after
               startup.

               false
                    disable the feature and use the normal (bitmap) font.

               true
                    startup  using the TrueType font specified by the faceName
                    and faceSize resource settings.  If there is no value  for
                    faceName,  disable the feature and use the normal (bitmap)
                    font.

                    After startup, you can still  switch  to/from  the  bitmap
                    font using the ?TrueType Fonts? menu entry.

               default
                    Enable  the  ?TrueType  Fonts? menu entry to allow runtime
                    switching to/from TrueType fonts.  The initial  font  used
                    depends upon whether the faceName resource is set:

                    ?   If  the  faceName  resource is not set, start by using
                        the  normal  (bitmap)  font.   Xterm  has  a  separate
                        compiled-in  value for faceName for this special case.
                        That is normally ?mono?.

                    ?   If the faceName resource is set, then start  by  using
                        the TrueType font rather than the bitmap font.

               defaultOff
                    Enable  the  ?TrueType  Fonts? menu entry to allow runtime
                    switching to/from TrueType  fonts,  but  allow  it  to  be
                    initially unselected if no faceName resource was given.

       resizeByPixel (class ResizeByPixel)
               Set  this  ?true?  to  disable hints to the window manager that
               request resizing by character rather than pixels.

               Most window managers provide visual feedback showing  the  size
               of  a  window  as  you  resize it, using these hints.  When you
               maximize xterm, it disables those hints  to  allow  the  window
               manager  to  make  better  use  of  fractional rows or columns.
               Setting this resource disables the hints all the time.

               The default is ?false?.

       resizeGravity (class ResizeGravity)
               Affects the behavior when the window is resized to be taller or
               shorter.  NorthWest specifies that the top line of text on  the
               screen  stay  fixed.   If the window is made shorter, lines are
               dropped from the bottom; if the window is  made  taller,  blank
               lines  are  added  at  the bottom.  This is compatible with the
               behavior in X11R4.  SouthWest (the default) specifies that  the
               bottom line of text on the screen stay fixed.  If the window is
               made  taller, additional saved lines will be scrolled down onto
               the screen; if the  window  is  made  shorter,  lines  will  be
               scrolled  off  the  top  of the screen, and the top saved lines
               will be dropped.

       retryInputMethod (class RetryInputMethod)
               Tells xterm how many times to retry, in case  the  input-method
               server  is  not  responding.   This  is  a different issue than
               unsupported preedit type, etc.  You may  encounter  retries  if
               your  X  configuration  (and its libraries) are missing pieces.
               Setting this resource to zero ?0?  will  cancel  the  retrying.
               The default is ?3?.

       reverseVideo (class ReverseVideo)
               Specifies  whether  or  not  reverse video should be simulated.
               The default is ?false?.

               There are several aspects to reverse video in xterm:

               ?   The command-line  -rv  option  tells  the  X  libraries  to
                   reverse  the  foreground  and  background  colors.  Xterm's
                   command-line options set resource values.   In  particular,
                   the  X  Toolkit sets the reverseVideo resource when the -rv
                   option is used.

               ?   If the user has also used command-line options -fg  or  -bg
                   to set the foreground and background colors, xterm does not
                   see  these  options  directly.   Instead,  it  examines the
                   resource values to reconstruct  the  command-line  options,
                   and  determine  which  of the colors is the user's intended
                   foreground, etc.  Their actual values are irrelevant to the
                   reverse video function; some users prefer  the  X  defaults
                   (black  text  on  a  white background), others prefer white
                   text on a black background.

               ?   After startup, the user  can  toggle  the  ?Enable  Reverse
                   Video?  menu  entry.  This exchanges the current foreground
                   and background colors of the VT100 widget, and repaints the
                   screen.   Because  of  the  X   resource   hierarchy,   the
                   reverseVideo  resource  applies  to  more  than  the  VT100
                   widget.

               Programs running in an xterm can also use control sequences  to
               enable  the VT100 reverse video mode.  These are independent of
               the reverseVideo resource and the menu entry.  Xterm  exchanges
               the  current foreground and background colors when drawing text
               affected by these control sequences.

               Other control sequences can alter the foreground and background
               colors which are used:

               ?   Programs can also use the ANSI color control  sequences  to
                   set the foreground and background colors.

               ?   Extensions  to the ANSI color controls (such as 16-, 88- or
                   256-colors) are treated similarly to the ANSI control.

               ?   Using  other  control  sequences  (the   ?dynamic   colors?
                   feature),   a   program   can  change  the  foreground  and
                   background colors.

       reverseWrap (class ReverseWrap)
               Specifies whether or not reverse-wraparound should be  enabled.
               This  corresponds  to  xterm's private mode 45.  The default is
               ?false?.

       rightScrollBar (class RightScrollBar)
               Specifies whether or not the scrollbar should be  displayed  on
               the right rather than the left.  The default is ?false?.

       saveLines (class SaveLines)
               Specifies  the  number  of  lines to save beyond the top of the
               screen when a scrollbar is turned on.  The default is ?1024?.

       scrollBar (class ScrollBar)
               Specifies whether or not the  scrollbar  should  be  displayed.
               The default is ?false?.

       scrollBarBorder (class ScrollBarBorder)
               Specifies the width of the scrollbar border.  Note that this is
               drawn to overlap the border of the xterm window.  Modifying the
               scrollbar's  border  affects  only  the  line between the VT100
               widget and the scrollbar.  The default value is 1.

       scrollKey (class ScrollCond)
               Specifies whether or not pressing a  key  should  automatically
               cause  the  scrollbar  to  go  to  the  bottom of the scrolling
               region.  This corresponds to xterm's private  mode  1011.   The
               default is ?false?.

       scrollLines (class ScrollLines)
               Specifies   the  number  of  lines  that  the  scroll-back  and
               scroll-forw actions should use as a default.  The default value
               is 1.

       scrollTtyOutput (class ScrollCond)
               Specifies  whether  or  not  output  to  the  terminal   should
               automatically  cause  the  scrollbar to go to the bottom of the
               scrolling region.  The default is ?true?.

       selectToClipboard (class SelectToClipboard)
               Tells xterm whether to use the PRIMARY or CLIPBOARD for  SELECT
               tokens  in  the selection mechanism.  The set-select action can
               change this at runtime, allowing the user to work with programs
               that handle only one  of  these  mechanisms.   The  default  is
               ?false?, which tells it to use PRIMARY.

       shiftEscape (class ShiftEscape)
               Xterm uses the translations resource to determine how to invoke
               actions for selecting and copying text using the pointer (e.g.,
               a  mouse).  It also provides a mouse protocol which can be used
               by applications running in an  xterm  to  detect  mouse  button
               clicks.

               The   mouse  protocol  causes  xterm  to  send  special  escape
               sequences which allow an application to determine if  modifiers
               (i.e., one or more of shift, control, alt, and meta) were used.

               Xterm  provides this mouse protocol by interpreting button- and
               motion-events in the functions which the translations  resource
               calls for selecting and copying text:

                      insert-selection
                      select-end
                      select-extend
                      select-start
                      start-extend

               While  the mouse protocol is active, xterm reserves most of the
               mouse button events for sending special escape sequences to the
               application.  Xterm normally allows you to use the shift-key to
               temporarily  override  this  mouse  protocol,  permitting   the
               selection and copying actions to be used.

               The  shiftEscape  resource  setting  allows  you  to tell xterm
               whether to use the shift-key in this way (i.e., overriding  the
               mouse  protocol).   Xterm  accepts  either  a keyword (ignoring
               case) or the number shown in parentheses:

               false (0)
                  Mouse protocol does not send special escapes when  shift-key
                  is used.

               true (1)
                  Mouse  protocol  may  send special escapes when shift-key is
                  used.

                  At startup, xterm analyzes the  translations  to  see  which
                  buttons  are used in the (mouse) button-related bindings for
                  selection  and  copying  text.   If  the  shift-key  is  not
                  mentioned  explicitly  in  a  button's binding, xterm allows
                  that  button  with  shift-key  for  overriding   the   mouse
                  protocol.

               always (2)
                  Mouse  protocol  can always send special escapes when shift-
                  key is used.

               never (3)
                  Mouse protocol will never send special escapes  when  shift-
                  key is used.

               Xterm  interprets  a  control  sequence  which  can change this
               setting between ?true? and ?false?.  The default is ?false?.

       shiftFonts (class ShiftFonts)
               Specifies whether to enable the  actions  larger-vt-font()  and
               smaller-vt-font(),  which  are  normally  bound  to the shifted
               KP_Add and KP_Subtract.  The default is ?true?.

       showBlinkAsBold (class ShowBlinkAsBold)
               Tells xterm whether to display text  with  blink-attribute  the
               same  as  bold.   If  xterm  has not been configured to support
               blinking text, the default  is  ?true?,  which  corresponds  to
               older versions of xterm, otherwise the default is ?false?.

       showMissingGlyphs (class ShowMissingGlyphs)
               Tells  xterm  whether to display a box outlining places where a
               character has been used that the font does not represent.   The
               default is ?true?.

       showWrapMarks (class ShowWrapMarks)
               For  debugging  xterm  and applications that may manipulate the
               wrapped-line flag by writing text at the right margin,  show  a
               mark  on  the right inner-border of the window.  The mark shows
               which lines have the flag set.

       signalInhibit (class SignalInhibit)
               Specifies whether or not the entries in the Main  Options  menu
               for sending signals to xterm should be disallowed.  The default
               is ?false?.

       sixelScrolling (class SixelScrolling)
               If xterm is configured to support SIXEL graphics, this resource
               tells  it  whether  to scroll up one line at a time when sixels
               would be written past the  bottom  line  on  the  window.   The
               default is ?true? which enables scrolling.

               Sixel  scrolling  is  the  opposite  of  DEC Sixel Display Mode
               (DECSDM): when one is on, the other is off.

       sixelScrollsRight (class SixelScrollsRight)
               If xterm is configured to support SIXEL graphics, this resource
               tells it whether to scroll to the right as needed to  keep  the
               current  position  visible rather than truncate the plot on the
               on the right.  The default is ?false? which disables scrolling.

       tekGeometry (class Geometry)
               Specifies the preferred size  and  position  of  the  Tektronix
               window.  There is no default for this resource.

       tekInhibit (class TekInhibit)
               Specifies whether or not the escape sequence to enter Tektronix
               mode should be ignored.  The default is ?false?.

       tekSmall (class TekSmall)
               Specifies whether or not the Tektronix mode window should start
               in its smallest size if no explicit geometry is given.  This is
               useful  when running xterm on displays with small screens.  The
               default is ?false?.

       tekStartup (class TekStartup)
               Specifies whether or not xterm should  start  up  in  Tektronix
               mode.  The default is ?false?.

       tiXtraScroll (class TiXtraScroll)
               Specifies  whether  xterm  should  scroll  to  a  new page when
               processing the ti or te  termcap  strings,  i.e.,  the  private
               modes  47, 1047 or 1049.  This is only in effect if titeInhibit
               is ?true?, because the intent of this option is  to  provide  a
               picture   of  the  full-screen  application's  display  on  the
               scrollback without wiping out the  text  that  would  be  shown
               before the application was initialized.

               Xterm  accepts  either  a keyword (ignoring case) or the number
               shown in parentheses:

               false (0)
                      nothing is added to the scrollback.

               true (1)
                      the current screen is added to the scrollback.

               trim (2)
                      the current screen  is  added  to  the  scrollback,  but
                      repeated  blank  lines  are trimmed (reduced to a single
                      blank line).

               The default for this resource is ?false?.

       titeInhibit (class TiteInhibit)
               Originally specified whether or not xterm should remove ti  and
               te termcap entries (used to switch between alternate screens on
               startup  of  many  screen-oriented  programs)  from the TERMCAP
               string.

               TERMCAP is used rarely now, but xterm supports the  feature  on
               modern systems:

               ?   If set, xterm also ignores the escape sequence to switch to
                   the alternate screen.

               ?   Xterm  supports  terminfo  in  a  different way, supporting
                   composite control sequences (also known as  private  modes)
                   1047,  1048  and  1049  which  have  the same effect as the
                   original 47 control sequence.

               The default for this resource is ?false?.

       titleModes (class TitleModes)
               Tells xterm whether to accept or return window- and icon-labels
               in ISO-8859-1 (the default) or UTF-8.  Either can be encoded in
               hexadecimal:

               ?   UTF-8 titles require special treatment,  because  they  may
                   contain bytes which can be mistaken for control characters.
                   Hexadecimal-encoding   is   supported   to  eliminate  that
                   possibility.

               ?   As an  alternative,  you  could  use  the  allowC1Printable
                   resource,  which suppresses xterm's parsing of the relevant
                   control characters (and as a result, treats those bytes  as
                   data).

               The default for this resource is ?0?.

               Each bit (bit ?0? is 1, bit ?1? is 2, etc.)  corresponds to one
               of the parameters set by the title modes control sequence:

               0    Set window/icon labels using hexadecimal

               1    Query window/icon labels using hexadecimal

               2    Set  window/icon labels using UTF-8 (gives the same effect
                    as the utf8Title resource).

               3    Query window/icon labels using UTF-8

       translations (class Translations)
               Specifies the key and button bindings  for  menus,  selections,
               ?programmed  strings?,  etc.   The translations resource, which
               provides much of xterm's configurability, is a feature of the X
               Toolkit Intrinsics library (Xt).  See the Actions section.

       trimSelection (class TrimSelection)
               If you set highlightSelection, you can see the  text  which  is
               selected,  including  any trailing spaces.  Clearing the screen
               (or a line) resets it to a state containing  no  spaces.   Some
               lines  may  contain  trailing spaces when an application writes
               them to the screen.  However, you may not wish to  paste  lines
               with  trailing  spaces.   If  this resource is true, xterm will
               trim trailing spaces from text which is selected.  It does  not
               affect  spaces which result in a wrapped line, nor will it trim
               the trailing newline  from  your  selection.   The  default  is
               ?false?.

       underLine (class UnderLine)
               This specifies whether or not text with the underline attribute
               should   be   underlined.   It  may  be  desirable  to  disable
               underlining  when  color  is  being  used  for  the   underline
               attribute.  The default is ?true?.

       useBorderClipping (class UseBorderClipping)
               Tell xterm whether to apply clipping when useClipping is false.
               Unlike  useClipping,  this simply limits text to keep it within
               the window borders, e.g., as a refinement  to  the  scaleHeight
               workaround.  The default is ?false?.

       useClipping (class UseClipping)
               Tell  xterm whether to use clipping to keep from producing dots
               outside the text drawing area.  Originally used to work  around
               for overstriking effects, this is also needed to work with some
               incorrectly-sized fonts.  The default is ?true?.

       utf8 (class Utf8)
               This  specifies  whether  xterm will run in UTF-8 mode.  If you
               set this resource, xterm also sets the wideChars resource as  a
               side-effect.  The resource can be set via the menu entry ?UTF-8
               Encoding?.  The default is ?default?.

               Xterm  accepts  either  a keyword (ignoring case) or the number
               shown in parentheses:

               false (0)
                  UTF-8 mode is initially off.  The  command-line  option  +u8
                  sets  the  resource  to  this  value.   Escape sequences for
                  turning UTF-8 mode on/off are allowed.

               true (1)
                  UTF-8 mode is initially on.  Escape  sequences  for  turning
                  UTF-8 mode on/off are allowed.

               always (2)
                  The command-line option -u8 sets the resource to this value.
                  Escape sequences for turning UTF-8 mode on/off are ignored.

               default (3)
                  This  is  the  default value of the resource.  It is changed
                  during  initialization  depending  on  whether  the   locale
                  resource  was  set,  to  false  (0)  or always (2).  See the
                  locale  resource  for  additional  discussion  of  non-UTF-8
                  locales.

               If  you  want  to  set  the value of utf8, it should be in this
               range.  Other nonzero values are treated the same as ?1?, i.e.,
               UTF-8 mode is initially on, and escape  sequences  for  turning
               UTF-8 mode on/off are allowed.

       utf8Fonts (class Utf8Fonts)
               See  the  discussion  of  the  locale resource.  This specifies
               whether xterm will  use  UTF-8  fonts  specified  via  resource
               patterns such as ?*vt100.utf8Fonts.font? or normal (ISO-8859-1)
               fonts  via patterns such as ?*vt100.font?.  The resource can be
               set  via  the  menu  entry  ?UTF-8  Fonts?.   The  default   is
               ?default?.

               Xterm  accepts  either  a keyword (ignoring case) or the number
               shown in parentheses:

               false (0)
                      Use the ISO-8859-1 fonts.  The menu  entry  is  enabled,
                      allowing the choice of fonts to be changed at runtime.

               true (1)
                      Use  the  UTF-8  fonts.   The  menu  entry  is  enabled,
                      allowing the choice of fonts to be changed at runtime.

               always (2)
                      Always use the UTF-8 fonts.  This also disables the menu
                      entry.

               default (3)
                      At startup, the  resource  is  set  to  true  or  false,
                      according to the effective value of the utf8 resource.

       utf8Latin1 (class Utf8Latin1)
               If true, allow an ISO-8859-1 normal font to be combined with an
               ISO-10646-1  font  if the latter is given via the -fw option or
               its corresponding resource value.  The default is ?false?.

       utf8SelectTypes (class Utf8SelectTypes)
               Override   xterm's   default   selection   target   list   (see
               SELECT/PASTE)  for  selections  in wide-character (UTF-8) mode.
               The default is an  empty  string,  i.e.,  ??,  which  does  not
               override anything.

       utf8Title (class Utf8Title)
               Applications  can  set  xterm's  title  by  writing  a  control
               sequence.  Normally this control  sequence  follows  the  VT220
               convention,  which  encodes the string in ISO-8859-1 and allows
               for an 8-bit string terminator.  If xterm is started in a UTF-8
               locale, it translates the ISO-8859-1 string to  UTF-8  to  work
               with the X libraries which assume the string is UTF-8.

               However, some users may wish to write a title string encoded in
               UTF-8.   The  window  manager is responsible for drawing window
               titles.  Some window managers (not all) support UTF-8  encoding
               of  window  titles.   Set  this  resource to ?true? to also set
               UTF-8 encoded title strings using the EWMH properties.

               This feature is available as a menu entry, since it is  related
               to  the  particular  applications you are running within xterm.
               You can also use a control  sequence  (see  the  discussion  of
               ?Title Modes? in Xterm Control Sequences), to set an equivalent
               flag (which can also be set using the titleModes resource).

               Xterm  accepts  either  a keyword (ignoring case) or the number
               shown in parentheses:

               false (0)
                      Set only ISO-8859-1 title strings, e.g., using the ICCCM
                      WM_NAME STRING property.  The  menu  entry  is  enabled,
                      allowing  the  choice  of title-strings to be changed at
                      runtime.

               true (1)
                      Set both the EWMH (UTF-8 strings) and the ICCCM WM_NAME,
                      etc.  The menu entry is enabled, allowing the choice  to
                      be changed at runtime.

               always (2)
                      Always  set  both the EWMH (UTF-8 strings) and the ICCCM
                      WM_NAME, etc.  This also disables the menu entry.

               default (3)
                      At startup, the  resource  is  set  to  true  or  false,
                      according to the effective value of the utf8 resource.

               The default is ?default?.

       utf8Weblike (class Utf8Weblike)
               Provide an alternate error-handling scheme for ill-formed UTF-8
               as  recommended  in  a W3C document.  The Unicode standard does
               not require this for conformance.  Some additional  information
               can be found here:

               https://invisible-island.net/xterm/bad-utf8/

               The default is ?false?.

       veryBoldColors (class VeryBoldColors)
               Specifies  whether  to  combine  video  attributes  with colors
               specified by colorBD, colorBL, colorIT, colorRV,  and  colorUL.
               The resource value is the sum of values for each attribute:
                 1 for reverse,
                 2 for underline,
                 4 for bold,
                 8 for blink, and
                 512 for italic

               The default is ?0?.

       visualBell (class VisualBell)
               Specifies whether or not a visible bell (i.e., flashing) should
               be  used instead of an audible bell when Control-G is received.
               The default is ?false?, which tells xterm  to  use  an  audible
               bell.

       visualBellDelay (class VisualBellDelay)
               Number  of milliseconds to delay when displaying a visual bell.
               Default is 100.  If set to zero, no visual bell  is  displayed.
               This  is useful for very slow displays, e.g., an LCD display on
               a laptop.

       visualBellLine (class VisualBellLine)
               Specifies  whether  to  flash  only  the  current   line   when
               displaying  a  visual  bell  rather  than  flashing  the entire
               screen: The default is ?false?, which tells xterm to flash  the
               entire screen.

       vt100Graphics (class VT100Graphics)
               This  specifies  whether  xterm  will  interpret  VT100 graphic
               character escape sequences while in UTF-8 mode.   This  feature
               also  applies  to  code-pages  (e.g.,  for VT320 and VT520) and
               National Replacement Character Sets (VT220 and up), but not US-
               ASCII (the initially selected character set), to avoid conflict
               with UTF-8.  The default is  ?true?,  to  provide  support  for
               various legacy applications.

       wideBoldFont (class WideBoldFont)
               This  option  specifies the font to be used for displaying bold
               wide text.  By default, it will attempt to use a font twice  as
               wide  as  the  font that will be used to draw bold text.  If no
               double-width font is found, it will  improvise,  by  stretching
               the bold font.

       wideChars (class WideChars)
               Specifies  if  xterm  should  respond to control sequences that
               process 16-bit characters.  The default is ?false?.

       wideFont (class WideFont)
               This option specifies the font to be used for  displaying  wide
               text.   By default, it will attempt to use a font twice as wide
               as the font that will be used  to  draw  normal  text.   If  no
               double-width  font  is  found, it will improvise, by stretching
               the normal font.

       xftMaxGlyphMemory (class XftMaxGlyphMemory)
               Set the Xft library's limit on glyph  memory  (typically  4Mb).
               When  it  reaches  this  limit,  it  discards ?randomly chosen?
               glyphs to make room for new ones.  The default is  ?0?  to  use
               Xft's default value.

       xftMaxUnrefFonts (class XftMaxUnrefFonts)
               Set  the  Xft  library's  limit on fonts which have been loaded
               (typically 16), e.g., matching patterns for fallback  searches,
               but  are  not  actually  used.  The default is ?0? to use Xft's
               default value.

       xftTrackMemUsage (class XftTrackMemUsage)
               Enables glyph memory tracking (introduced in Xft 2.3.5),  which
               allows  Xft  to  efficiently discard obsolete data when running
               short of memory.  The default is ?false?.

       ximFont (class XimFont)
               This option specifies the font to be used  for  displaying  the
               preedit string in the ?OverTheSpot? input method.

               In  ?OverTheSpot?  preedit  type,  the  preedit (preconversion)
               string is displayed at the position of the cursor.  It  is  the
               XIM server's responsibility to display the preedit string.  The
               XIM  client  must inform the XIM server of the cursor position.
               For best results, the preedit string must be displayed  with  a
               proper  font.   Therefore,  xterm informs the XIM server of the
               proper font.  The font is be supplied  by  a  "fontset",  whose
               default  value  is ?*?.  This matches every font, the X library
               automatically chooses fonts with proper charsets.  The  ximFont
               resource is provided to override this default font setting.

   Tek4014 Widget Resources
       The  following  resources  are  specified as part of the tek4014 widget
       (class  Tek4014).   These   are   specified   by   patterns   such   as
       ?XTerm.tek4014.NAME?:

       font2 (class Font)
               Specifies font number 2 to use in the Tektronix window.

       font3 (class Font)
               Specifies font number 3 to use in the Tektronix window.

       fontLarge (class Font)
               Specifies the large font to use in the Tektronix window.

       fontSmall (class Font)
               Specifies the small font to use in the Tektronix window.

       ginTerminator (class GinTerminator)
               Specifies  what  character(s)  should  follow  a  GIN report or
               status report.  The possibilities are ?none?,  which  sends  no
               terminating characters, ?CRonly?, which sends CR, and ?CR&EOT?,
               which sends both CR and EOT.  The default is ?none?.

       height (class Height)
               Specifies the height of the Tektronix window in pixels.

       initialFont (class InitialFont)
               Specifies  which  of the four Tektronix fonts to use initially.
               Values are the  same  as  for  the  set-tek-text  action.   The
               default is ?large?.

       width (class Width)
               Specifies the width of the Tektronix window in pixels.

   Menu Resources
       The resources that may be specified for the various menus are described
       in  the  documentation  for the Athena SimpleMenu widget.  The name and
       classes of  the  entries  in  each  of  the  menus  are  listed  below.
       Resources  named  ?lineN? where N is a number are separators with class
       SmeLine.

       As  with  all  X  resource-based  widgets,  the  labels  mentioned  are
       customary defaults for the application.

       The Main Options menu (widget name mainMenu) has the following entries:

       toolbar (class SmeBSB)
               This entry invokes the set-toolbar(toggle) action.

       securekbd (class SmeBSB)
               This entry invokes the secure() action.

       allowsends (class SmeBSB)
               This entry invokes the allow-send-events(toggle) action.

       redraw (class SmeBSB)
               This entry invokes the redraw() action.

       logging (class SmeBSB)
               This entry invokes the logging(toggle) action.

       print-immediate (class SmeBSB)
               This entry invokes the print-immediate() action.

       print-on-error (class SmeBSB)
               This entry invokes the print-on-error() action.

       print (class SmeBSB)
               This entry invokes the print() action.

       print-redir (class SmeBSB)
               This entry invokes the print-redir() action.

       dump-html (class SmeBSB)
               This entry invokes the dump-html() action.

       dump-svg (class SmeBSB)
               This entry invokes the dump-svg() action.

       8-bit-control (class SmeBSB)
               This entry invokes the set-8-bit-control(toggle) action.

       backarrow key (class SmeBSB)
               This entry invokes the set-backarrow(toggle) action.

       num-lock (class SmeBSB)
               This entry invokes the set-num-lock(toggle) action.

       alt-esc (class SmeBSB)
               This entry invokes the alt-sends-escape(toggle) action.

       meta-esc (class SmeBSB)
               This entry invokes the meta-sends-escape(toggle) action.

       delete-is-del (class SmeBSB)
               This entry invokes the delete-is-del(toggle) action.

       oldFunctionKeys (class SmeBSB)
               This entry invokes the set-old-function-keys(toggle) action.

       hpFunctionKeys (class SmeBSB)
               This entry invokes the set-hp-function-keys(toggle) action.

       scoFunctionKeys (class SmeBSB)
               This entry invokes the set-sco-function-keys(toggle) action.

       sunFunctionKeys (class SmeBSB)
               This entry invokes the set-sun-function-keys(toggle) action.

       sunKeyboard (class SmeBSB)
               This entry invokes the sunKeyboard(toggle) action.

       suspend (class SmeBSB)
               This entry invokes the send-signal(tstp) action on systems that
               support job control.

       continue (class SmeBSB)
               This entry invokes the send-signal(cont) action on systems that
               support job control.

       interrupt (class SmeBSB)
               This entry invokes the send-signal(int) action.

       hangup (class SmeBSB)
               This entry invokes the send-signal(hup) action.

       terminate (class SmeBSB)
               This entry invokes the send-signal(term) action.

       kill (class SmeBSB)
               This entry invokes the send-signal(kill) action.

       quit (class SmeBSB)
               This entry invokes the quit() action.

       The VT Options menu (widget name vtMenu) has the following entries:

       scrollbar (class SmeBSB)
               This entry invokes the set-scrollbar(toggle) action.

       jumpscroll (class SmeBSB)
               This entry invokes the set-jumpscroll(toggle) action.

       reversevideo (class SmeBSB)
               This entry invokes the set-reverse-video(toggle) action.

       autowrap (class SmeBSB)
               This entry invokes the set-autowrap(toggle) action.

       reversewrap (class SmeBSB)
               This entry invokes the set-reversewrap(toggle) action.

       autolinefeed (class SmeBSB)
               This entry invokes the set-autolinefeed(toggle) action.

       appcursor (class SmeBSB)
               This entry invokes the set-appcursor(toggle) action.

       appkeypad (class SmeBSB)
               This entry invokes the set-appkeypad(toggle) action.

       scrollkey (class SmeBSB)
               This entry invokes the set-scroll-on-key(toggle) action.

       scrollttyoutput (class SmeBSB)
               This entry invokes the set-scroll-on-tty-output(toggle) action.

       allow132 (class SmeBSB)
               This entry invokes the set-allow132(toggle) action.

       cursesemul (class SmeBSB)
               This entry invokes the set-cursesemul(toggle) action.

       keepSelection (class SmeBSB)
               This entry invokes the set-keep-selection(toggle) action.

       selectToClipboard (class SmeBSB)
               This entry invokes the set-keep-clipboard(toggle) action.

       visualbell (class SmeBSB)
               This entry invokes the set-visual-bell(toggle) action.

       bellIsUrgent (class SmeBSB)
               This entry invokes the set-bellIsUrgent(toggle) action.

       poponbell (class SmeBSB)
               This entry invokes the set-pop-on-bell(toggle) action.

       cursorblink (class SmeBSB)
               This entry invokes the set-cursorblink(toggle) action.

       titeInhibit (class SmeBSB)
               This entry invokes the set-titeInhibit(toggle) action.

       activeicon (class SmeBSB)
               This  entry toggles active icons on and off if this feature was
               compiled into xterm.  It is enabled only if xterm  was  started
               with  the command line option +ai or the activeIcon resource is
               set to ?true?.

       softreset (class SmeBSB)
               This entry invokes the soft-reset() action.

       hardreset (class SmeBSB)
               This entry invokes the hard-reset() action.

       clearsavedlines (class SmeBSB)
               This entry invokes the clear-saved-lines() action.

       tekshow (class SmeBSB)
               This entry invokes the set-visibility(tek,toggle) action.

       tekmode (class SmeBSB)
               This entry invokes the set-terminal-type(tek) action.

       vthide (class SmeBSB)
               This entry invokes the set-visibility(vt,off) action.

       altscreen (class SmeBSB)
               This entry invokes the set-altscreen(toggle) action.

       sixelScrolling (class SmeBSB)
               This entry invokes the set-sixel-scrolling(toggle) action.

       privateColorRegisters (class SmeBSB)
               This entry invokes the set-private-colors(toggle) action.

       The VT Fonts menu (widget name fontMenu) has the following entries:

       fontdefault (class SmeBSB)
               This entry invokes the set-vt-font(d) action, setting the  font
               using the font (default) resource, e.g., ?Default? in the menu.

       font1 (class SmeBSB)
               This  entry invokes the set-vt-font(1) action, setting the font
               using the font1 resource, e.g., ?Unreadable? in the menu.

       font2 (class SmeBSB)
               This entry invokes the set-vt-font(2) action, setting the  font
               using the font2 resource, e.g., ?Tiny? in the menu.

       font3 (class SmeBSB)
               This  entry invokes the set-vt-font(3) action, setting the font
               using the font3 resource, e.g., ?Small? in the menu.

       font4 (class SmeBSB)
               This entry invokes the set-vt-font(4) action, letting the  font
               using the font4 resource, e.g., ?Medium? in the menu.

       font5 (class SmeBSB)
               This  entry invokes the set-vt-font(5) action, letting the font
               using the font5 resource, e.g., ?Large? in the menu.

       font6 (class SmeBSB)
               This entry invokes the set-vt-font(6) action, letting the  font
               using the font6 resource, e.g., ?Huge? in the menu.

       font7 (class SmeBSB)
               This  entry invokes the set-vt-font(7) action, letting the font
               using the font7 resource, e.g., ?Enormous? in the menu.

       fontescape (class SmeBSB)
               This entry invokes the set-vt-font(e) action.

       fontsel (class SmeBSB)
               This entry invokes the set-vt-font(s) action.

       allow-bold-fonts (class SmeBSB)
               This entry invokes the allow-bold-fonts(toggle) action.

       font-linedrawing (class SmeBSB)
               This entry invokes the set-font-linedrawing(s) action.

       font-packed (class SmeBSB)
               This entry invokes the set-font-packed(s) action.

       font-doublesize (class SmeBSB)
               This entry invokes the set-font-doublesize(s) action.

       render-font (class SmeBSB)
               This entry invokes the set-render-font(s) action.

       utf8-fonts (class SmeBSB)
               This entry invokes the set-utf8-fonts(s) action.

       utf8-mode (class SmeBSB)
               This entry invokes the set-utf8-mode(s) action.

       utf8-title (class SmeBSB)
               This entry invokes the set-utf8-title(s) action.

       allow-color-ops (class SmeBSB)
               This entry invokes the allow-color-ops(toggle) action.

       allow-font-ops (class SmeBSB)
               This entry invokes the allow-fonts-ops(toggle) action.

       allow-tcap-ops (class SmeBSB)
               This entry invokes the allow-tcap-ops(toggle) action.

       allow-title-ops (class SmeBSB)
               This entry invokes the allow-title-ops(toggle) action.

       allow-window-ops (class SmeBSB)
               This entry invokes the allow-window-ops(toggle) action.

       The Tek Options menu (widget name tekMenu) has the following entries:

       tektextlarge (class SmeBSB)
               This entry invokes the set-tek-text(large) action.

       tektext2 (class SmeBSB)
               This entry invokes the set-tek-text(2) action.

       tektext3 (class SmeBSB)
               This entry invokes the set-tek-text(3) action.

       tektextsmall (class SmeBSB)
               This entry invokes the set-tek-text(small) action.

       tekpage (class SmeBSB)
               This entry invokes the tek-page() action.

       tekreset (class SmeBSB)
               This entry invokes the tek-reset() action.

       tekcopy (class SmeBSB)
               This entry invokes the tek-copy() action.

       vtshow (class SmeBSB)
               This entry invokes the set-visibility(vt,toggle) action.

       vtmode (class SmeBSB)
               This entry invokes the set-terminal-type(vt) action.

       tekhide (class SmeBSB)
               This entry invokes the set-visibility(tek,toggle) action.

   Scrollbar Resources
       The following resources  are  useful  when  specified  for  the  Athena
       Scrollbar widget:

       background (class Background)
               Specifies the color to use for the background of the scrollbar.

       foreground (class Foreground)
               Specifies the color to use for the foreground of the scrollbar.

       thickness (class Thickness)
               Specifies the width in pixels of the scrollbar (default: 14).

               This may be overridden by the width resource.

       thumb (class Thumb)
               The  default  ?thumb? pixmap used for the scrollbar is a simple
               checkerboard pattern  alternating  pixels  for  foreground  and
               background color.

       width (class Width)
               Specifies the width in pixels of the scrollbar (default: 0).

               The widget checks the width resource first, using the thickness
               value if the width is zero.

POINTER USAGE
       Once  the  VTxxx window is created, xterm allows you to select text and
       copy it within the same or other  windows  using  the  pointer  or  the
       keyboard.

       A   ?pointer?  could  be  a  mouse,  touchpad  or  similar  device.   X
       applications generally do not care, since they see only  button  events
       which have

       ?   position and

       ?   button up/down state

       Xterm can see these events as long as it has focus.

       The  keyboard  also  supplies  events, but it is less flexible than the
       pointer for selecting/copying text.

       Events are applied to actions using  the  translations  resource.   See
       Actions  for a complete list, and Default Key Bindings for the built-in
       set of translations resources.

   Selection Functions
       By default, the  selection  functions  are  invoked  when  the  pointer
       buttons  are  used  with  no modifiers, and when they are used with the
       ?shift? key.  The ?shift? key is special, because xterm  uses  that  to
       ensure  that  selection  functions  are  still  available  when  it  is
       programmed to send escape sequences in one  of  the  mouse  modes  (see
       Xterm Control Sequences, as well as the resource disallowedMouseOps).

       At  startup,  xterm  inspects  the  translations  resource to see which
       pointer buttons may be used in this way, and  remembers  these  buttons
       when  deciding  whether  to  send escape sequences or perform selection
       when those buttons are used with the ?shift? modifier.   Other  pointer
       buttons,  e.g.,  typically  those  sent for wheel mouse events, are not
       affected.

       The assignment of the functions described below to keys and buttons may
       be changed through the resource database; see Actions below.

       Pointer button one (usually left)
            is used to save text into the cut buffer:

                ~Meta <Btn1Down>:select-start()

            Move the cursor to beginning of the text, and then hold the button
            down while moving  the  cursor  to  the  end  of  the  region  and
            releasing  the  button.   The  selected text is highlighted and is
            saved in the global cut buffer and made  the  selection  when  the
            button is released:

                <BtnUp>:select-end(SELECT, CUT_BUFFER0) \n

            Normally (but see the discussion of on2Clicks, etc):

            ?   Double-clicking selects by words.

            ?   Triple-clicking selects by lines.

            ?   Quadruple-clicking goes back to characters, etc.

            Multiple-click  is determined by the time from button up to button
            down, so you can change the selection unit  in  the  middle  of  a
            selection.  Logical words and lines selected by double- or triple-
            clicking  may  wrap across more than one screen line if lines were
            wrapped by xterm itself rather than by the application running  in
            the  window.   If  the  key/button  bindings  specify  that  an  X
            selection is to be  made,  xterm  will  leave  the  selected  text
            highlighted for as long as it is the selection owner.

       Pointer button two (usually middle)
            ?types?  (pastes)  the  text  from  the  given  selection, if any,
            otherwise from the cut buffer, inserting it as keyboard input:

                ~Ctrl ~Meta <Btn2Up>:insert-selection(SELECT, CUT_BUFFER0)

       Pointer button three (usually right)
            extends the current selection.

                ~Ctrl ~Meta <Btn3Down>:start-extend()

            (Without loss of generality,  you  can  swap  ?right?  and  ?left?
            everywhere  in  the  rest  of  this  paragraph.)  If pressed while
            closer to the right edge  of  the  selection  than  the  left,  it
            extends/contracts  the  right  edge  of  the  selection.   If  you
            contract the selection past the left edge of the selection,  xterm
            assumes  you  really  meant  the  left edge, restores the original
            selection, then extends/contracts the left edge of the  selection.
            Extension  starts  in  the  selection  unit  mode  that  the  last
            selection or extension was performed in; you can multiple-click to
            cycle through them.

       By cutting and pasting pieces of text without trailing new  lines,  you
       can  take  text  from  several  places  in different windows and form a
       command to the shell, for example, or take output from  a  program  and
       insert  it  into  your favorite editor.  Since cut buffers are globally
       shared among different applications, you may regard each  as  a  ?file?
       whose contents you know.  The terminal emulator and other text programs
       should  be  treating  it  as  if it were a text file, i.e., the text is
       delimited by new lines.

   Scrolling
       The scroll region displays the position and amount  of  text  currently
       showing  in  the  window  (highlighted)  relative to the amount of text
       actually saved.  As more text is saved (up to the maximum), the size of
       the highlighted area decreases.

       Clicking button one with the pointer in the  scroll  region  moves  the
       adjacent line to the top of the display window.

       Clicking  button three moves the top line of the display window down to
       the pointer position.

       Clicking button two moves the display to a position in the  saved  text
       that corresponds to the pointer's position in the scrollbar.

   Tektronix Pointer
       Unlike  the  VTxxx  window,  the  Tektronix  window  does not allow the
       copying of text.  It does allow Tektronix GIN mode, and  in  this  mode
       the cursor will change from an arrow to a cross.  Pressing any key will
       send that key and the current coordinate of the cross cursor.  Pressing
       button  one,  two,  or three will return the letters ?l?, ?m?, and ?r?,
       respectively.  If the ?shift? key is pressed when a pointer  button  is
       pressed, the corresponding upper case letter is sent.  To distinguish a
       pointer  button  from  a key, the high bit of the character is set (but
       this is bit is normally stripped unless the terminal mode is  RAW;  see
       tty(4) for details).

SELECT/PASTE
       X  clients  provide  select and paste support by responding to requests
       conveyed by the X server.  The X server holds  data  in  ?atoms?  which
       correspond  to  the  different  types of selection (PRIMARY, SECONDARY,
       CLIPBOARD) as well as the similar cut buffer mechanism (CUT_BUFFER0  to
       CUT_BUFFER7).  Those are documented in the ICCCM.

       The  ICCCM  deals  with  the underlying mechanism for select/paste.  It
       does not mention highlighting.   The  selection  is  not  the  same  as
       highlighting.  Xterm (like many applications) uses highlighting to show
       you the currently selected text.  An X application may own a selection,
       which allows it to be the source of data copied using a given selection
       atom  Xterm may continue owning a selection after it stops highlighting
       (see keepSelection).

   PRIMARY
       When configured to use the primary selection (the default),  xterm  can
       provide  the  selection  data  in  ways  which help to retain character
       encoding information as it is pasted.

       The PRIMARY token is a standard X  feature,  documented  in  the  ICCCM
       (Inter-Client Communication Conventions Manual), which states

          The  selection  named  by  the atom PRIMARY is used for all commands
          that take only a single argument  and  is  the  principal  means  of
          communication between clients that use the selection mechanism.

       A  user ?selects? text on xterm, which highlights the selected text.  A
       subsequent ?paste? to another client forwards a request to  the  client
       owning  the  selection.   If xterm owns the primary selection, it makes
       the data available in the form of one or more ?selection targets?.   If
       it  does  not own the primary selection, e.g., if it has released it or
       another client has asserted ownership, it relies on cut-buffers to pass
       the data.  But cut-buffers handle only ISO-8859-1  data  (officially  -
       some clients ignore the rules).

   CLIPBOARD
       When  configured  to  use  the  clipboard  (using the selectToClipboard
       resource), the problem  with  persistence  of  ownership  is  bypassed.
       Otherwise,  there  is  no  difference  regarding  the data which can be
       passed via selection.

       The selectToClipboard resource is a compromise, allowing  CLIPBOARD  to
       be  treated  almost  like  PRIMARY,  unlike  the ICCCM, which describes
       CLIPBOARD in different terms than PRIMARY or  SECONDARY.   Its  lengthy
       explanation begins with the essential points:

          The  selection named by the atom CLIPBOARD is used to hold data that
          is being transferred between clients, that is, data that usually  is
          being  cut  and  then  pasted or copied and then pasted.  Whenever a
          client wants to transfer data to the clipboard:

          ?   It should assert ownership of the CLIPBOARD.

          ?   If it succeeds in acquiring ownership, it should be prepared  to
              respond  to  a  request for the contents of the CLIPBOARD in the
              usual way (retaining the data to be able  to  return  it).   The
              request  may  be  generated  by  the  clipboard client described
              below.

   SELECT
       However,  many  applications  use  CLIPBOARD  in  imitation  of   other
       windowing  systems.   The selectToClipboard resource (and corresponding
       menu entry Select to Clipboard) introduce the SELECT token (known  only
       to xterm) which chooses between the PRIMARY and CLIPBOARD tokens.

       Without  using  this feature, one can use workarounds such as the xclip
       program to show the contents of the X clipboard within an xterm window.

   SECONDARY
       This is used less often than PRIMARY or CLIPBOARD.   According  to  the
       ICCCM, it is used

       ?   As  the  second  argument  to  commands  taking  two arguments (for
           example, ?exchange primary and secondary selections?)

       ?   As a means of obtaining data when there is a primary selection  and
           the user does not want to disturb it

   Selection Targets
       The  different  types  of  data  which  are  passed  depend on what the
       receiving client asks for.  These are termed selection targets.

       When asking for the selection data, xterm tries the following types  in
       this order:

            UTF8_STRING
                 This  is an XFree86 extension, which denotes that the data is
                 encoded in UTF-8.  When xterm is  built  with  wide-character
                 support, it both accepts and provides this type.

            TEXT the text is in the encoding which corresponds to your current
                 locale.

            COMPOUND_TEXT
                 this  is  a  format  for multiple character set data, such as
                 multi-lingual text.  It can store UTF-8  data  as  a  special
                 case.

            STRING
                 This is Latin 1 (ISO-8859-1) data.

       The  middle  two  (TEXT  and  COMPOUND_TEXT)  are  added  if  xterm  is
       configured with the i18nSelections resource set to ?true?.

       UTF8_STRING is preferred (therefore first  in  the  list)  since  xterm
       stores text as Unicode data when running in wide-character mode, and no
       translation  is  needed.  On the other hand, TEXT and COMPOUND_TEXT may
       require translation.  If  the  translation  is  incomplete,  they  will
       insert X's ?defaultString? whose value cannot be set, and may simply be
       empty.   Xterm's defaultString resource specifies the string to use for
       incomplete translations of the UTF8_STRING.

       You can alter the types which xterm tries using the eightBitSelectTypes
       or utf8SelectTypes  resources.   For  instance,  you  might  have  some
       specific  locale  setting  which  does  not  use  UTF-8  encoding.  The
       resource value is a comma-separated  list  of  the  selection  targets,
       which consist of the names shown.  You can use the special name I18N to
       denote the optional inclusion of TEXT and COMPOUND_TEXT.  The names are
       matched ignoring case, and can be abbreviated.  The default list can be
       expressed in several ways, e.g.,

              UTF8_STRING,I18N,STRING
              utf8,i18n,string
              u,i,s

   Mouse Protocol
       Applications  can  send  escape  sequences to xterm to cause it to send
       escape sequences back to the computer when you press a pointer  button,
       or even (depending on which escape sequence) send escape sequences back
       to the computer as you move the pointer.

       These  escape  sequences  and the responses, called the mouse protocol,
       are documented in XTerm Control Sequences.  They do not appear  in  the
       actions  invoked by the translations resource because the resource does
       not change while you run xterm, whereas  applications  can  change  the
       mouse prototol (i.e., enable, disable, use different modes).

       However,  the mouse protocol is interpreted within the actions that are
       usually associated with the pointer buttons.  Xterm ignores  the  mouse
       protocol  in the insert-selection action if the shift-key is pressed at
       the same time.  It also modifies a few other actions if  the  shift-key
       is  pressed,  e.g., suppressing the response with the pointer position,
       though not eliminating changes to the selected text.

MENUS
       Xterm has four menus, named mainMenu, vtMenu,  fontMenu,  and  tekMenu.
       Each  menu  pops  up  under  the correct combinations of key and button
       presses.  Each menu is divided into sections, separated by a horizontal
       line.  Some menu entries correspond to modes that can  be  altered.   A
       check  mark appears next to a mode that is currently active.  Selecting
       one of these modes toggles its state.  Other menu entries are commands;
       selecting one of these performs the indicated function.

       All of the menu entries correspond to X actions.  In  the  list  below,
       the menu label is shown followed by the action's name in parenthesis.

   Main Options
       The  xterm  mainMenu  pops up when the ?control? key and pointer button
       one are pressed in a window.  This menu contains items  that  apply  to
       both the VTxxx and Tektronix windows.  There are several sections:

       Commands for managing X events:

              Toolbar (resource toolbar)
                     Clicking on the ?Toolbar? menu entry hides the toolbar if
                     it is visible, and shows it if it is not.

              Secure Keyboard (resource securekbd)
                     The  Secure  Keyboard  mode  is  helpful  when  typing in
                     passwords  or  other  sensitive  data  in   an   unsecure
                     environment (see SECURITY below, but read the limitations
                     carefully).

              Allow SendEvents (resource allowsends)
                     Specifies  whether or not synthetic key and button events
                     generated using the X protocol SendEvent  request  should
                     be  interpreted  or  discarded.   This corresponds to the
                     allowSendEvents resource.

              Redraw Window (resource redraw)
                     Forces  the  X  display  to  repaint;  useful   in   some
                     environments.

       Commands for capturing output:

              Log to File (resource logging)
                     Captures text sent to the screen in a log file, as in the
                     -l logging option.

              Print-All Immediately (resource print-immediate)
                     Invokes  the  print-immediate action, sending the text of
                     the current window directly to a file,  as  specified  by
                     the     printFileImmediate,     printModeImmediate    and
                     printOptsImmediate resources.

              Print-All on Error (resource print-on-error)
                     Invokes the print-on-error action, which toggles  a  flag
                     telling  xterm  that if it exits with an X error, to send
                     the text of the current window directly  to  a  file,  as
                     specified by the printFileOnXError, printModeOnXError and
                     printOptsOnXError resources.

              Print Window (resource print)
                     Sends the text of the current window to the program given
                     in the printerCommand resource.

              Redirect to Printer (resource print-redir)
                     This  sets the printerControlMode to 0 or 2.  You can use
                     this to turn the printer on as if an application had sent
                     the appropriate control sequence.  It is also useful  for
                     switching  the  printer off if an application turns it on
                     without resetting the print control mode.

              XHTML Screen Dump (resource dump-html)
                     Available only when compiled with  screen  dump  support.
                     Invokes the dump-html action.  This creates an XHTML file
                     matching  the  contents  of the current screen, including
                     the border, internal border, colors and most  attributes:
                     bold, italic, underline, faint, strikeout, reverse; blink
                     is rendered as white-on-red; double underline is rendered
                     the   same  as  underline  since  there  is  no  portable
                     equivalent in CSS 2.2.

                     The font is whatever your browser uses  for  preformatted
                     (<pre>)  elements.  The XHTML file references a cascading
                     style sheet (CSS) named ?xterm.css? that you  can  create
                     to select a font or override properties.

                     The  following  CSS  selectors are used with the expected
                     default behavior in the XHTML file:

                     .ul for underline,
                     .bd for bold,
                     .it for italic,
                     .st for strikeout,
                     .lu for strikeout combined with underline.

                     In addition you may use

                     .ev to affect even numbered lines and
                     .od to affect odd numbered lines.

                     Attributes faint, reverse and blink  are  implemented  as
                     style  attributes  setting  color properties.  All colors
                     are specified as RGB  percentages  in  order  to  support
                     displays with 10 bits per RGB.

                     The name of the file will be

                         xterm.yyyy.MM.dd.hh.mm.ss.xhtml

                     where  yyyy,  MM,  dd, hh, mm and ss are the year, month,
                     day, hour, minute and second when  the  screen  dump  was
                     performed  (the file is created in the directory xterm is
                     started in, or the home directory for a login xterm).

                     The dump-html action can  also  be  triggered  using  the
                     Media Copy control sequence CSI 1 0 i, for example from a
                     shell script with

                         printf '\033[10i'

                     Only the UTF-8 encoding is supported.

              SVG Screen Dump (resource dump-svg)
                     Available  only  when  compiled with screen dump support.
                     Invokes the dump-svg action.   This  creates  a  Scalable
                     Vector  Graphics  (SVG) file matching the contents of the
                     current screen, including the  border,  internal  border,
                     colors  and  most  attributes:  bold,  italic, underline,
                     double underline, faint,  strikeout,  reverse;  blink  is
                     rendered  as  white-on-red.   The  font  is whatever your
                     renderer uses for the monospace font-family.  All  colors
                     are  specified  as  RGB  percentages  in order to support
                     displays with 10 bits per RGB.

                     The name of the file will be

                         xterm.yyyy.MM.dd.hh.mm.ss.svg

                     where yyyy, MM, dd, hh, mm and ss are  the  year,  month,
                     day,  hour,  minute  and  second when the screen dump was
                     performed (the file is created in the directory xterm  is
                     started in, or the home directory for a login xterm).

                     The dump-svg action can also be triggered using the Media
                     Copy control sequence CSI 1 1 i, for example from a shell
                     script with

                         printf '\033[11i'

                     Only the UTF-8 encoding is supported.

       Modes for setting keyboard style:

              8-Bit Controls (resource 8-bit-control)
                     Enabled  for VT220 emulation, this controls whether xterm
                     will send 8-bit control sequences rather than using 7-bit
                     (ASCII) controls, e.g.,  sending  a  byte  in  the  range
                     128?159  rather  than  the escape character followed by a
                     second byte.  Xterm  always  interprets  both  8-bit  and
                     7-bit  control  sequences  (see Xterm Control Sequences).
                     This corresponds to the eightBitControl resource.

              Backarrow Key (BS/DEL) (resource backarrow key)
                     Modifies the behavior of the  backarrow  key,  making  it
                     transmit   either   a   backspace  (8)  or  delete  (127)
                     character.   This   corresponds   to   the   backarrowKey
                     resource.

              Alt/NumLock Modifiers (resource num-lock)
                     Controls the treatment of Alt- and NumLock-key modifiers.
                     This corresponds to the numLock resource.

              Meta Sends Escape (resource meta-esc)
                     Controls  whether  Meta  keys  are  converted into a two-
                     character sequence with the character itself preceded  by
                     ESC.  This corresponds to the metaSendsEscape resource.

              Delete is DEL (resource delete-is-del)
                     Controls  whether  the  Delete  key on the editing keypad
                     should send DEL (127) or the  VT220-style  Remove  escape
                     sequence.  This corresponds to the deleteIsDEL resource.

              Old Function-Keys (resource oldFunctionKeys)

              HP Function-Keys (resource hpFunctionKeys)

              SCO Function-Keys (resource scoFunctionKeys)

              Sun Function-Keys (resource sunFunctionKeys)

              VT220 Keyboard (resource sunKeyboard)
                     These  act as a radio-button, selecting one style for the
                     keyboard layout.  The layout corresponds to more than one
                     resource    setting:    sunKeyboard,     sunFunctionKeys,
                     scoFunctionKeys and hpFunctionKeys.

       Commands for process signalling:

              Send STOP Signal (resource suspend)

              Send CONT Signal (resource continue)

              Send INT Signal (resource interrupt)

              Send HUP Signal (resource hangup)

              Send TERM Signal (resource terminate)

              Send KILL Signal (resource kill)
                     These  send the SIGTSTP, SIGCONT, SIGINT, SIGHUP, SIGTERM
                     and SIGKILL signals respectively, to the process group of
                     the process running under xterm (usually the shell).  The
                     SIGCONT function is especially useful  if  the  user  has
                     accidentally typed CTRL-Z, suspending the process.

              Quit (resource quit)
                     Stop  processing  X  events  except  to support the -hold
                     option, and then send a  SIGHUP  signal  to  the  process
                     group  of  the  process  running under xterm (usually the
                     shell).

   VT Options
       The xterm vtMenu sets various modes in  the  VTxxx  emulation,  and  is
       popped  up when the ?control? key and pointer button two are pressed in
       the VTxxx window.

       VTxxx Modes:

              Enable Scrollbar (resource scrollbar)
                     Enable (or disable) the scrollbar.  This  corresponds  to
                     the -sb option and the scrollBar resource.

              Enable Jump Scroll (resource jumpscroll)
                     Enable  (or disable) jump scrolling.  This corresponds to
                     the -j option and the jumpScroll resource.

              Enable Reverse Video (resource reversevideo)
                     Enable (or disable) reverse-video.  This  corresponds  to
                     the -rv option and the reverseVideo resource.

              Enable Auto Wraparound (resource autowrap)
                     Enable (or disable) auto-wraparound.  This corresponds to
                     the -aw option and the autoWrap resource.

              Enable Reverse Wraparound (resource reversewrap)
                     Enable (or disable) reverse wraparound.  This corresponds
                     to the -rw option and the reverseWrap resource.

              Enable Auto Linefeed (resource autolinefeed)
                     Enable (or disable) auto-linefeed.  This is the VT102 NEL
                     function,  which  causes the emulator to emit a line feed
                     after each carriage return.  There  is  no  corresponding
                     command-line option or resource setting.

              Enable Application Cursor Keys (resource appcursor)
                     Enable   (or  disable)  application  cursor  keys.   This
                     corresponds to the appcursorDefault resource.   There  is
                     no corresponding command-line option.

              Enable Application Keypad (resource appkeypad)
                     Enable   (or  disable)  application  keypad  keys.   This
                     corresponds to the appkeypadDefault resource.   There  is
                     no corresponding command-line option.

              Scroll to Bottom on Key Press (resource scrollkey)
                     Enable  (or  disable)  scrolling  to  the  bottom  of the
                     scrolling region on a keypress.  This corresponds to  the
                     -sk option and the scrollKey resource.

                     As  a  special  case,  the XON / XOFF keys (control/S and
                     control/Q) are ignored.

              Scroll to Bottom on Tty Output (resource scrollttyoutput)
                     Enable (or  disable)  scrolling  to  the  bottom  of  the
                     scrolling   region  on  output  to  the  terminal.   This
                     corresponds to the -si  option  and  the  scrollTtyOutput
                     resource.

              Allow 80/132 Column Switching (resource allow132)
                     Enable (or disable) switching between 80 and 132 columns.
                     This   corresponds  to  the  -132  option  and  the  c132
                     resource.

              Keep Selection (resource keepSelection)
                     Tell xterm whether to disown the selection when it  stops
                     highlighting  it,  e.g., when an application modifies the
                     display so that it no longer matches the text  which  has
                     been  highlighted.  As long as xterm continues to own the
                     selection  for  a  given  atom,  it   can   provide   the
                     corresponding  text  to  other  clients which request the
                     selection using that atom.

                     This corresponds to the keepSelection resource.  There is
                     no corresponding command-line option.

                     Telling xterm  to  not  disown  the  selection  does  not
                     prevent  other  applications from taking ownership of the
                     selection.    When   that   happens,    xterm    receives
                     notification  that  this  has  happened,  and removes its
                     highlighting.

                     See SELECT/PASTE for more information.

              Select to Clipboard (resource selectToClipboard)
                     Tell xterm whether to use the PRIMARY  or  CLIPBOARD  for
                     SELECT  tokens  in  the  translations resource which maps
                     keyboard and mouse actions to select/paste actions.

                     This  corresponds  to  the  selectToClipboard   resource.
                     There is no corresponding command-line option.

                     The  keepSelection  resource setting applies to CLIPBOARD
                     selections  just  as  it  does  for  PRIMARY  selections.
                     However   some   window   managers  treat  the  clipboard
                     specially.   For  instance,   XQuartz's   synchronization
                     between  the  OSX pasteboard and the X11 clipboard causes
                     applications to lose the  selection  ownership  for  that
                     atom when a selection is copied to the clipboard.

                     See SELECT/PASTE for more information.

              Enable Visual Bell (resource visualbell)
                     Enable (or disable) visible bell (i.e., flashing) instead
                     of  an  audible bell.  This corresponds to the -vb option
                     and the visualBell resource.

              Enable Bell Urgency (resource bellIsUrgent)
                     Enable (or disable)  Urgency  window  manager  hint  when
                     Control-G   is   received.    This   corresponds  to  the
                     bellIsUrgent resource.

              Enable Pop on Bell (resource poponbell)
                     Enable (or disable) raising of the window when  Control-G
                     is received.  This corresponds to the -pop option and the
                     popOnBell resource.

              Enable Blinking Cursor (resource cursorblink)
                     Enable  (or  disable)  the blinking-cursor feature.  This
                     corresponds  to  the  -bc  option  and  the   cursorBlink
                     resource.   There  are  also  escape sequences (see Xterm
                     Control Sequences):

                     ?   If the cursorBlinkXOR resource is set, the menu entry
                         and the escape sequence states will be XOR'd: if both
                         are enabled, the cursor will not blink, if  only  one
                         is enabled, the cursor will blink.

                     ?   If  the cursorBlinkXOR is not set; if either the menu
                         entry or the escape  sequence  states  are  set,  the
                         cursor will blink.

                     In either case, the checkbox for the menu shows the state
                     of  the cursorBlink resource, which may not correspond to
                     what the cursor is actually doing.

              Enable Alternate Screen Switching (resource titeInhibit)
                     Enable (or disable)  switching  between  the  normal  and
                     alternate  screens.   This corresponds to the titeInhibit
                     resource.  There is no corresponding command-line option.

              Enable Active Icon (resource activeicon)
                     Enable  (or  disable)  the  active-icon  feature.    This
                     corresponds   to   the  -ai  option  and  the  activeIcon
                     resource.

              Sixel Scrolling (resource sixelScrolling)
                     This corresponds to the sixelScrolling resource.  It  can
                     also  be  turned off and on using the private mode DECSDM
                     (Sixel Display Mode).

                     ?   When enabled,  xterm  draws  sixel  graphics  at  the
                         current  text  cursor  location,  scrolling the image
                         vertically if it  is  larger  than  the  screen,  and
                         leaving  the  text  cursor  at the same column in the
                         next complete line after the image when returning  to
                         text mode

                         This  is  the default, which corresponds to the reset
                         state of DECSDM.

                     ?   When disabled, xterm draws sixel graphics starting at
                         the upper left of the screen,  cropping  to  fit  the
                         screen, and does not alter the text cursor location.

                         This corresponds to the set state of DECSDM.

                     There is no corresponding command-line option.

              Private Color Registers (resource privateColorRegisters)
                     If  xterm  is  configured to support ReGIS graphics, this
                     controls whether a private color palette can be used.

                     When enabled, each graphic image uses a separate  set  of
                     color  registers,  so  that  it essentially has a private
                     palette (this is the default).  If it  is  not  set,  all
                     graphics  images share a common set of registers which is
                     how sixel and ReGIS graphics worked on  actual  hardware.
                     The  default  is  likely  a  more  useful  mode on modern
                     TrueColor hardware.

                     This corresponds to the  privateColorRegisters  resource.
                     There is no corresponding command-line option.

       VTxxx Commands:

              Do Soft Reset (resource softreset)
                     This corresponds to the VT220 DECSTR control sequence.  A
                     soft  reset leaves the contents of the window intact, but
                     resets modes which affect subsequent updates:

                     Soft reset differs from full reset in a minor detail:

                     ?   Set the  saved  cursor  position  to  the  upper-left
                         corner of the window.

                     ?   Exit from the status-line without erasing it.

                     Both soft/full resets do the following:

                     ?   Make  the  cursor visible, with shape reset according
                         to the cursorUnderLine and cursorBar resources.

                     ?   Enable or disable the cursor-blinking state according
                         to the  cursorBlink  resource,  and  set  the  Enable
                         Blinking Cursor menu checkmark to match.

                     ?   Reset   video   attributes,   e.g.,   bold,   italic,
                         underline, blink.

                     ?   Reset the  ANSI  color  mode  to  the  xterm  default
                         foreground and background.

                     ?   Reset the 256-color palette to its initial state.

                     ?   Reset   the  selected  character  set,  e.g.,  ASCII,
                         alternate character set.  The  UTF-8  modes  are  not
                         changed.

                     ?   Reset ECMA-48 KAM.

                     ?   Reset    DECCKM    and    DECKPAM    per    resources
                         appcursorDefault and appkeypadDefault.

                     ?   Reset the key-modifier modes to  the  values  set  by
                         resources      formatOtherKeys,     modifyCursorKeys,
                         modifyFunctionKeys,        modifyKeyboard,        and
                         modifyOtherKeys.

                     ?   Reset origin mode (DECOM).

                     ?   Reset  all margins (i.e., top/bottom and left/right).
                         This can be convenient when some program has left the
                         scroll regions set incorrectly (often a problem  when
                         using VMS or TOPS-20).

                     ?   Set  autowrap  and  reverse wrapping according to the
                         resource values autoWrap and reverseWrap.

                     ?   Reset checksum  extension  to  the  checksumExtension
                         resource.

              Do Full Reset (resource hardreset)
                     A full reset does this in addition to a soft reset:

                     ?   Clear the window.

                     ?   Reset tab stops to every eight columns.

                     ?   Reset the screen to match the reverseVideo resource.

                     ?   Resize  the  screen  to 80 columns if 132-column mode
                         was initially enabled with the c132 resource.

                     ?   Reset  scrolling  (jump  versus   smooth)   per   the
                         jumpScroll resource.

                     ?   Enable  linefeed  mode (ECMA-48 LNM) and send/receive
                         mode (ECMA-48 SRM).

                     ?   Reset DEC user-defined keys (DECUDK).

                     ?   Disable application mode for cursor- and  keypad-keys
                         (DECCKM, DECKPAM).

                     ?   Reset   menu   entry  8-bit  Controls,  per  resource
                         eightBitControl.

                     ?   Reset  interpretation  of  the  backarrow  key,   per
                         initial resource settings.

                     ?   Set  the  keyboard  type  according  to the resources
                         keyboardType,    hpFunctionKeys,     scoFunctionKeys,
                         sunFunctionKeys,  tcapFunctionKeys, oldXtermFKeys and
                         sunKeyboard.

                     ?   Turn mouse tracking off.

                     ?   Reset  title  and   pointer   modes   per   resources
                         titleModes and pointerMode.

                     ?   Reset the readline and bracketed paste modes.

                     ?   Discard  all  SIXEL  and  ReGIS  graphics  data  from
                         memory.

                     ?   Reset sixelScrolling and  privateColorRegisters  from
                         initial resource values.

                     ?   Set  DECSDM  if  the sixelScrolling resource is true.
                         Otherwise, reset DECSDM.

                     A full reset does this, unlike a soft reset:

                     ?   Move the cursor  to  the  upper-left  corner  of  the
                         window, and then save that position.

                     ?   Hide  the  status-line,  setting  its display-type to
                         ?none?.

              Reset and Clear Saved Lines (resource clearsavedlines)
                     Perform a full reset, and also clear the saved lines.

                     This corresponds to the VT102 RIS control sequence,  with
                     a  few obvious differences.  For example, your session is
                     not disconnected as a real VT102 would do.

       Commands for setting the current screen:

              Show Tek Window (resource tekshow)
                     When enabled, pops the Tektronix 4014 window up (makes it
                     visible).   When  disabled,  hides  the  Tektronix   4014
                     window.

              Switch to Tek Mode (resource tekmode)
                     When  enabled, pops the Tektronix 4014 window up if it is
                     not already visible, and switches  the  input  stream  to
                     that  window.   When  disabled,  hides the Tektronix 4014
                     window and switches input back to the VTxxx window.

              Hide VT Window (resource vthide)
                     When enabled, hides the VTxxx window, shows the Tektronix
                     4014 window if it was not already  visible  and  switches
                     the  input  stream  to that window.  When disabled, shows
                     the VTxxx window, and switches the input stream  to  that
                     window.

              Show Alternate Screen (resource altscreen)
                     When enabled, shows the alternate screen.  When disabled,
                     shows the normal screen.  Note that the normal screen may
                     have saved lines; the alternate screen does not.

   VT Fonts
       The  xterm  fontMenu  pops up when the ?control? key and pointer button
       three are pressed in a window.  It sets the  font  used  in  the  VTxxx
       window,  or modifies the way the font is specified or displayed.  There
       are several sections.

       The first section  allows  you  to  select  the  font  from  a  set  of
       alternatives:

              Default (resource fontdefault)
                     Set  the  font  to  the  default, i.e., that given by the
                     *VT100.font resource.

              Unreadable (resource font1)
                     Set the font to that given by the *VT100.font1 resource.

              Tiny (resource font2)
                     Set the font to that given by the *VT100.font2 resource.

              Small (resource font3)
                     Set the font to that given by the *VT100.font3 resource.

              Medium (resource font4)
                     Set the font to that given by the *VT100.font4 resource.

              Large (resource font5)
                     Set the font to that given by the *VT100.font5 resource.

              Huge (resource font6)
                     Set the font to that given by the *VT100.font6 resource.

              Enormous (resource font7)
                     Set the font to that given by the *VT100.font7 resource.

              Escape Sequence (resource fontescape)
                     This allows you to set the font last specified by the Set
                     Font escape sequence (see Xterm Control Sequences).

              Selection (resource fontsel)
                     This allows you to set the  font  specified  the  current
                     selection  as  a  font  name (if the PRIMARY selection is
                     owned).

       The second section allows you to modify the way it is displayed:

              Bold Fonts (resource allow-bold-fonts)
                     This is  normally  checked  (enabled).   When  unchecked,
                     xterm  will  not use bold fonts.  The setting corresponds
                     to the allowBoldFonts resource.

              Line-Drawing Characters (resource font-linedrawing)
                     When set,  tells  xterm  to  draw  its  own  line-drawing
                     characters.   Otherwise  it relies on the font containing
                     these.  Compare to the forceBoxChars resource.

              Packed Font (resource font-packed)
                     When set, tells xterm to use the minimum glyph-width from
                     a font when displaying characters.  Use the maximum width
                     (unchecked) to help display proportional fonts.   Compare
                     to the forcePackedFont resource.

              Doublesized Characters (resource font-doublesize)
                     When set, xterm may ask the font server to produce scaled
                     versions  of  the  normal  font,  for  VT102  double-size
                     characters.

       The third section allows you to modify the way it is specified:

              TrueType Fonts (resource render-font)
                     If the renderFont and corresponding resources  were  set,
                     this is a further control whether xterm will actually use
                     the Xft library calls to obtain a font.

              UTF-8 Encoding (resource utf8-mode)
                     This  controls  whether  xterm  uses  UTF-8  encoding  of
                     input/output.  It is  useful  for  temporarily  switching
                     xterm  to display text from an application which does not
                     follow the locale settings.  It corresponds to  the  utf8
                     resource.

              UTF-8 Fonts (resource utf8-fonts)
                     This controls whether xterm uses UTF-8 fonts for display.
                     It  is  useful for temporarily switching xterm to display
                     text from an application which does not follow the locale
                     settings.  It combines the utf8 and utf8Fonts  resources,
                     subject to the locale resource.

              UTF-8 Titles (resource utf8-title)
                     This  controls  whether  xterm accepts UTF-8 encoding for
                     title control sequences.  It corresponds to the utf8Fonts
                     resource.

                     Initially the checkmark is set according to both the utf8
                     and utf8Fonts resource values.  If the latter is  set  to
                     ?always?,  the checkmark is disabled.  Likewise, if there
                     are no fonts given in the  utf8Fonts  subresources,  then
                     the checkmark also is disabled.

                     The standard XTerm app-defaults file defines both sets of
                     fonts,  while  the  UXTerm app-defaults file defines only
                     one set.  Assuming the standard app-defaults files,  this
                     command  will  launch  xterm able to switch between UTF-8
                     and ISO-8859-1 encoded fonts:

                         uxterm -class XTerm

       The fourth section allows you to enable or disable  special  operations
       which  can  be  controlled by writing escape sequences to the terminal.
       These are disabled if the SendEvents feature is enabled:

              Allow Color Ops (resource allow-color-ops)
                     This corresponds to the allowColorOps  resource.   Enable
                     or disable control sequences that set/query the colors.

              Allow Font Ops (resource allow-font-ops)
                     This corresponds to the allowFontOps resource.  Enable or
                     disable control sequences that set/query the font.

              Allow Mouse Ops (resource allow-mouse-ops)
                     Enable  or  disable  control  sequences  that  cause  the
                     terminal to send escape sequences on  pointer-clicks  and
                     movement.    This   corresponds   to   the  allowMouseOps
                     resource.

              Allow Tcap Ops (resource allow-tcap-ops)
                     Enable  or  disable  control  sequences  that  query  the
                     terminal's notion of its function-key strings, as termcap
                     or   terminfo  capabilities.   This  corresponds  to  the
                     allowTcapOps resource.

              Allow Title Ops (resource allow-title-ops)
                     Enable or  disable  control  sequences  that  modify  the
                     window  title  or  icon  name.   This  corresponds to the
                     allowTitleOps resource.

              Allow Window Ops (resource allow-window-ops)
                     Enable or disable extended window control  sequences  (as
                     used  in dtterm).  This corresponds to the allowWindowOps
                     resource.

   Tek Options
       The xterm tekMenu sets various modes in the Tektronix emulation, and is
       popped up when the ?control? key and pointer button two are pressed  in
       the  Tektronix  window.   The current font size is checked in the modes
       section of the menu.

              Large Characters (resource tektextlarge)

              #2 Size Characters (resource tektext2)

              #3 Size Characters (resource tektext3)

              Small Characters (resource tektextsmall)

       Commands:

              PAGE (resource tekpage)
                     Simulates the Tektronix ?PAGE? button by

                     ?   clearing the window,

                     ?   cancelling the graphics input-mode, and

                     ?   moving the cursor to the home position.

              RESET (resource tekreset)
                     Unlike the similarly-named Tektronix ?RESET? button, this
                     does everything that PAGE does as well as  resetting  the
                     line-type and font-size to their default values.

              COPY (resource tekcopy)
                     Simulates  the  Tektronix  ?COPY?  button  (which makes a
                     hard-copy of the screen) by writing the information to  a
                     text file.

       Windows:

              Show VT Window (resource vtshow)

              Switch to VT Mode (resource vtmode)

              Hide Tek Window (resource tekhide)

SECURITY
       X environments differ in their security consciousness.

       ?   Most  servers, run under xdm, are capable of using a ?magic cookie?
           authorization  scheme  that  can  provide  a  reasonable  level  of
           security  for  many  people.   If your server is only using a host-
           based mechanism to control access to  the  server  (see  xhost(1)),
           then  if  you  enable  access  for  a host and other users are also
           permitted to run clients on that same host,  it  is  possible  that
           someone can run an application which uses the basic services of the
           X  protocol  to  snoop  on your activities, potentially capturing a
           transcript of everything you type at the keyboard.

       ?   Any process which has access to your X display can manipulate it in
           ways that you might not anticipate, even redirecting your  keyboard
           to  itself  and sending events to your application's windows.  This
           is true even with the ?magic cookie? authorization  scheme.   While
           the   allowSendEvents   provides   some  protection  against  rogue
           applications tampering  with  your  programs,  guarding  against  a
           snooper is harder.

       ?   The  X input extension for instance allows an application to bypass
           all of the other (limited)  authorization  and  security  features,
           including the GrabKeyboard protocol.

       ?   The  possibility  of an application spying on your keystrokes is of
           particular concern when you want to type in  a  password  or  other
           sensitive  data.   The  best  solution  to this problem is to use a
           better authorization mechanism than is provided by X.

       Subject to  all  of  these  caveats,  a  simple  mechanism  exists  for
       protecting keyboard input in xterm.

       The  xterm  menu  (see  MENUS  above)  contains a Secure Keyboard entry
       which, when enabled, attempts to ensure  that  all  keyboard  input  is
       directed only to xterm (using the GrabKeyboard protocol request).  When
       an  application  prompts  you for a password (or other sensitive data),
       you can enable Secure Keyboard using the menu, type in  the  data,  and
       then disable Secure Keyboard using the menu again.

       ?   This   ensures  that  you  know  which  window  is  accepting  your
           keystrokes.

       ?   It cannot ensure that there are no processes which have  access  to
           your X display that might be observing the keystrokes as well.

       Only  one X client at a time can grab the keyboard, so when you attempt
       to enable Secure Keyboard it may fail.  In this  case,  the  bell  will
       sound.   If the Secure Keyboard succeeds, the foreground and background
       colors will be exchanged (as if you selected the Enable  Reverse  Video
       entry  in  the  Modes menu); they will be exchanged again when you exit
       secure mode.  If the colors do not switch,  then  you  should  be  very
       suspicious  that  you  are  being  spoofed.  If the application you are
       running displays a prompt before asking for the password, it is  safest
       to enter secure mode before the prompt gets displayed, and to make sure
       that  the  prompt  gets  displayed  correctly  (in  the new colors), to
       minimize the probability of spoofing.  You can also bring up  the  menu
       again and make sure that a check mark appears next to the entry.

       Secure  Keyboard  mode  will  be  disabled  automatically if your xterm
       window becomes iconified (or otherwise unmapped), or if you start up  a
       reparenting window manager (that places a title bar or other decoration
       around  the  window) while in Secure Keyboard mode.  (This is a feature
       of the X  protocol  not  easily  overcome.)   When  this  happens,  the
       foreground  and  background  colors  will be switched back and the bell
       will sound in warning.

CHARACTER CLASSES
       Clicking the left pointer button twice  in  rapid  succession  (double-
       clicking) causes all characters of the same class (e.g., letters, white
       space, punctuation) to be selected as a ?word?.  Since different people
       have  different  preferences  for what should be selected (for example,
       should filenames be selected as a whole or only the separate subnames),
       the default mapping can be overridden through the use of the  charClass
       (class CharClass) resource.

       This resource is a series of comma-separated range:value pairs.

       ?   The  range  is either a single number or low-high in the range of 0
           to 65535, corresponding to the code for the character or characters
           to be set.

       ?   The value is arbitrary.  For example, the default  table  uses  the
           character number of the first character occurring in the set.  When
           not in UTF-8 mode, only the first 256 entries of this table will be
           used.

       The default table starts as follows -

           static int charClass[256] = {
           /* NUL  SOH  STX  ETX  EOT  ENQ  ACK  BEL */
               32,   1,   1,   1,   1,   1,   1,   1,
           /*  BS   HT   NL   VT   NP   CR   SO   SI */
                1,  32,   1,   1,   1,   1,   1,   1,
           /* DLE  DC1  DC2  DC3  DC4  NAK  SYN  ETB */
                1,   1,   1,   1,   1,   1,   1,   1,
           /* CAN   EM  SUB  ESC   FS   GS   RS   US */
                1,   1,   1,   1,   1,   1,   1,   1,
           /*  SP    !    "    #    $    %    &    ' */
               32,  33,  34,  35,  36,  37,  38,  39,
           /*   (    )    *    +    ,    -    .    / */
               40,  41,  42,  43,  44,  45,  46,  47,
           /*   0    1    2    3    4    5    6    7 */
               48,  48,  48,  48,  48,  48,  48,  48,
           /*   8    9    :    ;    <    =    >    ? */
               48,  48,  58,  59,  60,  61,  62,  63,
           /*   @    A    B    C    D    E    F    G */
               64,  48,  48,  48,  48,  48,  48,  48,
           /*   H    I    J    K    L    M    N    O */
               48,  48,  48,  48,  48,  48,  48,  48,
           /*   P    Q    R    S    T    U    V    W */
               48,  48,  48,  48,  48,  48,  48,  48,
           /*   X    Y    Z    [    \    ]    ^    _ */
               48,  48,  48,  91,  92,  93,  94,  48,
           /*   `    a    b    c    d    e    f    g */
               96,  48,  48,  48,  48,  48,  48,  48,
           /*   h    i    j    k    l    m    n    o */
               48,  48,  48,  48,  48,  48,  48,  48,
           /*   p    q    r    s    t    u    v    w */
               48,  48,  48,  48,  48,  48,  48,  48,
           /*   x    y    z    {    |    }    ~  DEL */
               48,  48,  48, 123, 124, 125, 126,   1,
           /* x80  x81  x82  x83  IND  NEL  SSA  ESA */
                1,   1,   1,   1,   1,   1,   1,   1,
           /* HTS  HTJ  VTS  PLD  PLU   RI  SS2  SS3 */
                1,   1,   1,   1,   1,   1,   1,   1,
           /* DCS  PU1  PU2  STS  CCH   MW  SPA  EPA */
                1,   1,   1,   1,   1,   1,   1,   1,
           /* x98  x99  x9A  CSI   ST  OSC   PM  APC */
                1,   1,   1,   1,   1,   1,   1,   1,
           /*   -    i   c/    L   ox   Y-    |   So */
              160, 161, 162, 163, 164, 165, 166, 167,
           /*  ..   c0   ip   <<    _        R0    - */
              168, 169, 170, 171, 172, 173, 174, 175,
           /*   o   +-    2    3    '    u   q|    . */
              176, 177, 178, 179, 180, 181, 182, 183,
           /*   ,    1    2   >>  1/4  1/2  3/4    ? */
              184, 185, 186, 187, 188, 189, 190, 191,
           /*  A`   A'   A^   A~   A:   Ao   AE   C, */
               48,  48,  48,  48,  48,  48,  48,  48,
           /*  E`   E'   E^   E:   I`   I'   I^   I: */
               48,  48,  48,  48,  48,  48,  48,  48,
           /*  D-   N~   O`   O'   O^   O~   O:    X */
               48,  48,  48,  48,  48,  48,  48, 215,
           /*  O/   U`   U'   U^   U:   Y'    P    B */
               48,  48,  48,  48,  48,  48,  48,  48,
           /*  a`   a'   a^   a~   a:   ao   ae   c, */
               48,  48,  48,  48,  48,  48,  48,  48,
           /*  e`   e'   e^   e:   i`   i'   i^   i: */
               48,  48,  48,  48,  48,  48,  48,  48,
           /*   d   n~   o`   o'   o^   o~   o:   -: */
               48,  48,  48,  48,  48,  48,  48, 247,
           /*  o/   u`   u'   u^   u:   y'    P   y: */
               48,  48,  48,  48,  48,  48,  48,  48};

              For  example,  the string ?33:48,37:48,45-47:48,38:48? indicates
              that the exclamation mark, percent sign,  dash,  period,  slash,
              and  ampersand  characters  should  be  treated  the same way as
              characters and numbers.  This is useful for cutting and  pasting
              electronic mailing addresses and filenames.

KEY BINDINGS
       It  is  possible  to  rebind  keys  (or sequences of keys) to arbitrary
       strings for input, by changing the translations resources for the vt100
       or tek4014 widgets.  Changing  the  translations  resource  for  events
       other  than  key  and  button  events  is  not expected, and will cause
       unpredictable behavior.

   Actions
       The following actions are provided for use within the vt100 or  tek4014
       translations resources:

       allow-bold-fonts(on/off/toggle)
               This action sets, unsets or toggles the allowBoldFonts resource
               and is also invoked by the allow-bold-fonts entry in fontMenu.

       allow-color-ops(on/off/toggle)
               This  action sets, unsets or toggles the allowColorOps resource
               and is also invoked by the allow-color-ops entry in fontMenu.

       allow-font-ops(on/off/toggle)
               This action sets, unsets or toggles the  allowFontOps  resource
               and is also invoked by the allow-font-ops entry in fontMenu.

       allow-mouse-ops(on/off/toggle)
               This action sets, unsets or toggles the allowMousepOps resource
               and is also invoked by the allow-mouse-ops entry in fontMenu.

       allow-send-events(on/off/toggle)
               This   action  sets,  unsets  or  toggles  the  allowSendEvents
               resource and  is  also  invoked  by  the  allowsends  entry  in
               mainMenu.

       allow-tcap-ops(on/off/toggle)
               This  action  sets, unsets or toggles the allowTcapOps resource
               and is also invoked by the allow-tcap-ops entry in fontMenu.

       allow-title-ops(on/off/toggle)
               This action sets, unsets or toggles the allowTitleOps  resource
               and is also invoked by the allow-title-ops entry in fontMenu.

       allow-window-ops(on/off/toggle)
               This action sets, unsets or toggles the allowWindowOps resource
               and is also invoked by the allow-window-ops entry in fontMenu.

       alt-sends-escape()
               This action toggles the state of the altSendsEscape resource.

       bell([percent])
               This action rings the keyboard bell at the specified percentage
               above or below the base volume.

       clear-saved-lines()
               This  action  does  hard-reset() and also clears the history of
               lines saved off the top of the screen.  It is also invoked from
               the clearsavedlines entry in vtMenu.  The effect  is  identical
               to a hardware reset (RIS) control sequence.

       copy-selection(destname [, ...])
               This  action  puts  the currently selected text into all of the
               selections  or  cutbuffers  specified  by   destname.    Unlike
               select-end,  it  does  not  send  a mouse position or otherwise
               modify the internal selection state.

       create-menu(m/v/f/t)
               This action creates one of the menus used by xterm, if  it  has
               not been previously created.  The parameter values are the menu
               names: mainMenu, vtMenu, fontMenu, tekMenu, respectively.

       dabbrev-expand()
               Expands  the  word  before cursor by searching in the preceding
               text on the screen and  in  the  scrollback  buffer  for  words
               starting  with  that  abbreviation.  Repeating dabbrev-expand()
               several times in sequence searches for an alternative expansion
               by looking farther back.  Lack of more matches is signaled by a
               bell.  Attempts to expand an empty word (i.e., when  cursor  is
               preceded  by  a  space)  yield successively all previous words.
               Consecutive identical expansions are ignored.  The word here is
               defined as  a  sequence  of  non-whitespace  characters.   This
               feature   partially   emulates   the   behavior   of   ?dynamic
               abbreviation? expansion in Emacs (bound there to M-/).  Here is
               a resource setting for xterm which will do the same thing:

                   *VT100*translations:    #override \n\
                           Meta <KeyPress> /:dabbrev-expand()

       deiconify()
               Changes the window state back to normal, if it was iconified.

       delete-is-del()
               This action toggles the state of the deleteIsDEL resource.

       dired-button()
               Handles a button  event  (other  than  press  and  release)  by
               echoing  the event's position (i.e., character line and column)
               in the following format:

                   ^X ESC G <line+? ?> <col+? ?>

       dump-html()
               Invokes the XHTML Screen Dump feature.

       dump-svg()
               Invokes the SVG Screen Dump feature.

       exec-formatted(format, sourcename [, ...])
               Execute an external command, using the  current  selection  for
               part  of the command's parameters.  The first parameter, format
               gives the basic command.   Succeeding  parameters  specify  the
               selection source as in insert-selection.

               The format parameter allows these substitutions:

               %%   inserts a "%".

               %P   the  screen-position  at  the beginning of the highlighted
                    region, as a semicolon-separated pair  of  integers  using
                    the values that the CUP control sequence would use.

               %p   the screen-position after the beginning of the highlighted
                    region, using the same convention as ?%P?.

               %S   the length of the string that ?%s? would insert.

               %s   the content of the selection, unmodified.

               %T   the length of the string that ?%t? would insert.

               %t   the  selection,  trimmed  of  leading/trailing whitespace.
                    Embedded spaces (and newlines) are copied as is.

               %R   the length of the string that ?%r? would insert.

               %r   the selection, trimmed of trailing whitespace.

               %V   the video attributes at the beginning of  the  highlighted
                    region,  as  a  semicolon-separated list of integers using
                    the values that the SGR control sequence would use.

               %v   the video attributes after  the  end  of  the  highlighted
                    region, using the same convention as ?%V?.

               After constructing the command-string, xterm forks a subprocess
               and  executes  the  command,  which  completes independently of
               xterm.

               For example, this translation would invoke a new xterm  process
               to  view  a file whose name is selected while holding the shift
               key down.  The new process is started when the mouse button  is
               released:

                   *VT100*translations: #override Shift \
                       <Btn1Up>:exec-formatted("xterm -e view '%t'", SELECT)

       exec-selectable(format, onClicks)
               Execute  an external command, using data copied from the screen
               for part of the command's  parameters.   The  first  parameter,
               format  gives  the  basic  command  as  in exec-formatted.  The
               second parameter specifies the method for copying the  data  as
               in the on2Clicks resource.

       fullscreen(on/off/toggle)
               This action sets, unsets or toggles the fullscreen resource.

       hard-reset()
               This action resets the scrolling region, tabs, window size, and
               cursor keys and clears the screen.  It is also invoked from the
               hardreset entry in vtMenu.

       iconify()
               Iconifies the window.

       ignore()
               This  action  ignores  the event but checks for special pointer
               position escape sequences.

       insert()
               This action inserts the character or string associated with the
               key that was pressed.

       insert-eight-bit()
               This  action  inserts  an  eight-bit  (Meta)  version  of   the
               character  or  string associated with the key that was pressed.
               Only single-byte  values  are  treated  specially.   The  exact
               action  depends  on  the  value  of  the altSendsEscape and the
               metaSendsEscape   and   the   eightBitInput   resources.    The
               metaSendsEscape    resource   is   tested   first.    See   the
               eightBitInput resource for a full discussion.

               The term ?eight-bit? is misleading: xterm checks if the key  is
               in  the range 128 to 255 (the eighth bit is set).  If the value
               is in that range, depending on the resource values,  xterm  may
               then do one of the following:

               ?   add 128 to the value, setting its eighth bit,

               ?   send an ESC byte before the key, or

               ?   send the key unaltered.

       insert-formatted(format, sourcename [, ...])
               Insert  the current selection or data related to it, formatted.
               The first parameter, format gives the template for the data  as
               in exec-formatted.  Succeeding parameters specify the selection
               source as in insert-selection.

       insert-selectable(format, onClicks)
               Insert  data  copied  from  the  screen,  formatted.  The first
               parameter, format  gives  the  template  for  the  data  as  in
               exec-formatted.   The second parameter specifies the method for
               copying the data as in the on2Clicks resource.

       insert-selection(sourcename [, ...])
               This action inserts  the  string  found  in  the  selection  or
               cutbuffer  indicated by sourcename.  Sources are checked in the
               order  given  (case  is  significant)  until  one   is   found.
               Commonly-used   selections  include:  PRIMARY,  SECONDARY,  and
               CLIPBOARD.  Cut buffers are typically named CUT_BUFFER0 through
               CUT_BUFFER7.

       insert-seven-bit()
               This action is a synonym for insert().  The term ?seven-bit? is
               misleading: it only implies that xterm does not try to add  128
               to the key's value as in insert-eight-bit().

       interpret(control-sequence)
               Interpret  the  given  control  sequence locally, i.e., without
               passing it to the host.  This works by  inserting  the  control
               sequence  at  the front of the input buffer.  Use ?\? to escape
               octal digits in the string.  Xt does not allow  you  to  put  a
               null character (i.e., ?\000?) in the string.

       keymap(name)
               This  action  dynamically defines a new translation table whose
               resource  name  is  name  with  the  suffix   ?Keymap?   (i.e.,
               nameKeymap, where case is significant).  The name None restores
               the original translation table.

       larger-vt-font()
               Set  the  font  to  the  next  larger  one,  based  on the font
               dimensions.  See also set-vt-font().

       load-vt-fonts(name[,class])
               Load fontnames from the given subresource name and class.  That
               is, load the ?*VT100.name.font?, resource as ?*VT100.font? etc.
               If no name is given, the original set of fontnames is restored.

               Unlike set-vt-font(), this does  not  affect  the  escape-  and
               select-fonts, since those are not based on resource values.  It
               does  affect  the  fonts  loosely organized under the ?Default?
               menu   entry,   including   font,   boldFont,   wideFont    and
               wideBoldFont.

       maximize()
               Resizes the window to fill the screen.

       meta-sends-escape()
               This action toggles the state of the metaSendsEscape resource.

       pointer-button()
               Use  this  action  as  a  fall-back to handle button press- and
               release-events for the mouse control sequence protocol when the
               selection-related  translations   are   suppressed   with   the
               omitTranslation resource.

       pointer-motion()
               Use  this action as a fall-back to handle motion-events for the
               mouse control  sequence  protocol  when  the  selection-related
               translations are suppressed with the omitTranslation resource.

       popup-menu(menuname)
               This  action  displays  the  specified popup menu.  Valid names
               (case is significant) include:  mainMenu, vtMenu, fontMenu, and
               tekMenu.

       print(printer-flags)
               This action prints the window.  It is also invoked by the print
               entry in mainMenu.

               The  action  accepts  optional  parameters,  which  temporarily
               override  resource  settings.  The parameter values are matched
               ignoring case:

               noFormFeed
                    no form feed will be sent at the  end  of  the  last  line
                    printed (i.e., printerFormFeed is ?false?).

               FormFeed
                    a  form  feed  will  be  sent  at the end of the last line
                    printed (i.e., printerFormFeed is ?true?).

               noNewLine
                    no newline will be sent  at  the  end  of  the  last  line
                    printed,  and  wrapped  lines  will  be combined into long
                    lines (i.e., printerNewLine is ?false?).

               NewLine
                    a newline will be  sent  at  the  end  of  the  last  line
                    printed,  and  each  line  will  be  limited  (by adding a
                    newline) to the  screen  width  (i.e.,  printerNewLine  is
                    ?true?).

               noAttrs
                    the    page   is   printed   without   attributes   (i.e.,
                    printAttributes is ?0?).

               monoAttrs
                    the page is printed  with  monochrome  (vt220)  attributes
                    (i.e., printAttributes is ?1?).

               colorAttrs
                    the  page  is  printed  with  ANSI color attributes (i.e.,
                    printAttributes is ?2?).

       print-everything(printer-flags)
               This action sends the entire text history, in addition  to  the
               text   currently   visible,   to   the  program  given  in  the
               printerCommand  resource.   It   allows   the   same   optional
               parameters  as  the  print  action.   With  a  suitable printer
               command, the action can be used to load the text history in  an
               editor.

       print-immediate()
               Sends  the  text  of  the current window directly to a file, as
               specified by  the  printFileImmediate,  printModeImmediate  and
               printOptsImmediate resources.

       print-on-error()
               Toggles  a flag telling xterm that if it exits with an X error,
               to send the text of the current window directly to a  file,  as
               specified   by  the  printFileOnXError,  printModeOnXError  and
               printOptsOnXError resources.

       print-redir()
               This action toggles the printerControlMode  between  0  and  2.
               The  corresponding popup menu entry is useful for switching the
               printer off if you happen to change your mind after deciding to
               print random binary files on the terminal.

       quit()
               This action sends a SIGHUP to the subprogram and exits.  It  is
               also invoked by the quit entry in mainMenu.

       readline-button()
               Supports  the  optional  readline  feature  by echoing repeated
               cursor forward or backward control sequences on button  release
               event,  to  request that the host application update its notion
               of the cursor's position to match the button event.

       redraw()
               This action redraws the window.  It  is  also  invoked  by  the
               redraw entry in mainMenu.

       restore()
               Restores the window to the size before it was last maximized.

       scroll-back(count [,units [,mouse] ])
               This  action scrolls the text window backward so that text that
               had previously scrolled off  the  top  of  the  screen  is  now
               visible.

               The  count argument indicates the number of units (which may be
               page, halfpage, pixel, or line) by  which  to  scroll.   If  no
               count  parameter is given, xterm uses the number of lines given
               by the scrollLines resource.

               An adjustment can be specified for the page or  halfpage  units
               by  appending  a  ?+?  or  ?-? sign followed by a number, e.g.,
               page-2 to specify 2 lines less than a page.

               If the second parameter is omitted ?lines? is used.

               If the third parameter mouse is given, the  action  is  ignored
               when mouse reporting is enabled.

       scroll-forw(count [,units [,mouse] ])
               This action is similar to scroll-back except that it scrolls in
               the other direction.

       scroll-lock(on/off/toggle)
               This  action sets, unsets or toggles internal state which tells
               xterm  whether  Scroll  Lock  is   active,   subject   to   the
               allowScrollLock resource.

       scroll-to(count)
               Scroll  to  the  given  line  relative  to the beginning of the
               saved-lines.  For instance, ?scroll-to(0)? would scroll to  the
               beginning.  Two special nonnumeric parameters are recognized:

               scroll-to(begin)
                       Scroll to the beginning of the saved lines.

               scroll-to(end)
                       Scroll  to  the  end  of  the saved lines, i.e., to the
                       currently active page.

       secure()
               This action toggles the Secure Keyboard  mode  (see  SECURITY),
               and is invoked from the securekbd entry in mainMenu.

       select-cursor-end(destname [, ...])
               This  action  is similar to select-end except that it should be
               used with select-cursor-start.

       select-cursor-extend()
               This action is similar to select-extend except that  it  should
               be used with select-cursor-start.

       select-cursor-start()
               This  action  is  similar to select-start except that it begins
               the selection at the current text cursor position.

       select-end(destname [, ...])
               This action puts the currently selected text into  all  of  the
               selections  or cutbuffers specified by destname.  It also sends
               a mouse position and updates the internal  selection  state  to
               reflect the end of the selection process.

       select-extend()
               This  action  tracks the pointer and extends the selection.  It
               should only be bound to Motion events.

       select-set()
               This  action  stores  text  that  corresponds  to  the  current
               selection, without affecting the selection mode.

       select-start()
               This  action  begins  text  selection  at  the  current pointer
               location.  See the section on POINTER USAGE for information  on
               making selections.

       send-signal(signame)
               This  action  sends  the  signal  named by signame to the xterm
               subprocess (the shell or program specified with the -e  command
               line  option).   It  is  also invoked by the suspend, continue,
               interrupt, hangup, terminate, and  kill  entries  in  mainMenu.
               Allowable  signal names are (case is not significant): tstp (if
               supported by the operating system),  suspend  (same  as  tstp),
               cont  (if  supported  by the operating system), int, hup, term,
               quit, alrm, alarm (same as alrm) and kill.

       set-8-bit-control(on/off/toggle)
               This  action  sets,  unsets  or  toggles  the   eightBitControl
               resource.   It  is also invoked from the 8-bit-control entry in
               vtMenu.

       set-allow132(on/off/toggle)
               This action sets, unsets or toggles the c132 resource.   It  is
               also invoked from the allow132 entry in vtMenu.

       set-altscreen(on/off/toggle)
               This  action  sets, unsets or toggles between the alternate and
               current screens.

       set-appcursor(on/off/toggle)
               This action sets, unsets or toggles  the  handling  Application
               Cursor  Key  mode and is also invoked by the appcursor entry in
               vtMenu.

       set-appkeypad(on/off/toggle)
               This action sets, unsets or toggles the handling of Application
               Keypad mode and is also  invoked  by  the  appkeypad  entry  in
               vtMenu.

       set-autolinefeed(on/off/toggle)
               This action sets, unsets or toggles automatic insertion of line
               feeds.  It is also invoked by the autolinefeed entry in vtMenu.

       set-autowrap(on/off/toggle)
               This  action sets, unsets or toggles automatic wrapping of long
               lines.  It is also invoked by the autowrap entry in vtMenu.

       set-backarrow(on/off/toggle)
               This action sets, unsets or toggles the backarrowKey  resource.
               It is also invoked from the backarrow key entry in vtMenu.

       set-bellIsUrgent(on/off/toggle)
               This  action sets, unsets or toggles the bellIsUrgent resource.
               It is also invoked by the bellIsUrgent entry in vtMenu.

       set-cursesemul(on/off/toggle)
               This action sets, unsets or toggles the curses resource.  It is
               also invoked from the cursesemul entry in vtMenu.

       set-cursorblink(on/off/toggle)
               This action sets, unsets or toggles the  cursorBlink  resource.
               It is also invoked from the cursorblink entry in vtMenu.

       set-font-doublesize(on/off/toggle)
               This   action   sets,  unsets  or  toggles  the  fontDoublesize
               resource.  It is also invoked by the font-doublesize  entry  in
               fontMenu.

       set-font-linedrawing(on/off/toggle)
               This action sets, unsets or toggles the xterm's state regarding
               whether  the  current  font  has  line-drawing  characters  and
               whether it should draw them directly.  It is  also  invoked  by
               the font-linedrawing entry in fontMenu.

       set-font-packed(on/off/toggle)
               This   action  sets,  unsets  or  toggles  the  forcePackedFont
               resource which controls use of the font's  minimum  or  maximum
               glyph  width.   It  is also invoked by the font-packed entry in
               fontMenu.

       set-hp-function-keys(on/off/toggle)
               This  action  sets,  unsets  or  toggles   the   hpFunctionKeys
               resource.   It  is  also invoked by the hpFunctionKeys entry in
               mainMenu.

       set-jumpscroll(on/off/toggle)
               This action sets, unsets or toggles  the  jumpscroll  resource.
               It is also invoked by the jumpscroll entry in vtMenu.

       set-keep-clipboard(on/off/toggle)
               This action sets, unsets or toggles the keepClipboard resource.

       set-keep-selection(on/off/toggle)
               This action sets, unsets or toggles the keepSelection resource.
               It is also invoked by the keepSelection entry in vtMenu.

       set-logging(on/off/toggle)
               This  action  sets,  unsets or toggles the state of the logging
               option.

       set-marginbell(on/off/toggle)
               This action sets, unsets or toggles the marginBell resource.

       set-num-lock(on/off/toggle)
               This action toggles the state of the numLock resource.

       set-old-function-keys(on/off/toggle)
               This action  sets,  unsets  or  toggles  the  state  of  legacy
               function keys.  It is also invoked by the oldFunctionKeys entry
               in mainMenu.

       set-pop-on-bell(on/off/toggle)
               This action sets, unsets or toggles the popOnBell resource.  It
               is also invoked by the poponbell entry in vtMenu.

       set-private-colors(on/off/toggle)
               This  action  sets, unsets or toggles the privateColorRegisters
               resource.

       set-render-font(on/off/toggle)
               This action sets, unsets or toggles  the  renderFont  resource.
               It is also invoked by the render-font entry in fontMenu.

       set-reverse-video(on/off/toggle)
               This  action sets, unsets or toggles the reverseVideo resource.
               It is also invoked by the reversevideo entry in vtMenu.

       set-reversewrap(on/off/toggle)
               This action sets, unsets or toggles the  reverseWrap  resource.
               It is also invoked by the reversewrap entry in vtMenu.

       set-sco-function-keys(on/off/toggle)
               This   action  sets,  unsets  or  toggles  the  scoFunctionKeys
               resource.  It is also invoked by the scoFunctionKeys  entry  in
               mainMenu.

       set-scroll-on-key(on/off/toggle)
               This action sets, unsets or toggles the scrollKey resource.  It
               is also invoked from the scrollkey entry in vtMenu.

       set-scroll-on-tty-output(on/off/toggle)
               This   action  sets,  unsets  or  toggles  the  scrollTtyOutput
               resource.  It is also invoked from the scrollttyoutput entry in
               vtMenu.

       set-scrollbar(on/off/toggle)
               This action sets, unsets or toggles the scrollbar resource.  It
               is also invoked by the scrollbar entry in vtMenu.

       set-select(on/off/toggle)
               This action  sets,  unsets  or  toggles  the  selectToClipboard
               resource.  It is also invoked by the selectToClipboard entry in
               vtMenu.

       set-sixel-scrolling(on/off/toggle)
               This  action  toggles  between  inline  (sixel  scrolling)  and
               absolute positioning.   It  can  also  be  controlled  via  DEC
               private  mode  80  (DECSDM) or from the sixelScrolling entry in
               the btMenu.

       set-sun-function-keys(on/off/toggle)
               This  action  sets,  unsets  or  toggles  the   sunFunctionKeys
               resource.   It  is also invoked by the sunFunctionKeys entry in
               mainMenu.

       set-sun-keyboard(on/off/toggle)
               This action sets, unsets or toggles the  sunKeyboard  resource.
               It is also invoked by the sunKeyboard entry in mainMenu.

       set-tek-text(large/2/3/small)
               This  action  sets the font used in the Tektronix window to the
               value of the selected resource according to the argument.   The
               argument  can  be  either  a keyword or single-letter alias, as
               shown in parentheses:

               large (l)
                    Use resource fontLarge, same as menu entry tektextlarge.

               two (2)
                    Use resource font2, same as menu entry tektext2.

               three (3)
                    Use resource font3, same as menu entry tektext3.

               small (s)
                    Use resource fontSmall, same as menu entry tektextsmall.

       set-terminal-type(type)
               This action directs output to either the  vt  or  tek  windows,
               according  to  the  type  string.   It  is  also invoked by the
               tekmode entry in vtMenu and the vtmode entry in tekMenu.

       set-titeInhibit(on/off/toggle)
               This action sets, unsets or toggles the  titeInhibit  resource,
               which  controls  switching  between  the  alternate and current
               screens.

       set-toolbar(on/off/toggle)
               This action sets, unsets or toggles the toolbar feature.  It is
               also invoked by the toolbar entry in mainMenu.

       set-utf8-fonts(on/off/toggle)
               This action sets, unsets or toggles the utf8Fonts resource.  It
               is also invoked by the utf8-fonts entry in fontMenu.

       set-utf8-mode(on/off/toggle)
               This action sets, unsets or toggles the utf8 resource.   It  is
               also invoked by the utf8-mode entry in fontMenu.

       set-utf8-title(on/off/toggle)
               This action sets, unsets or toggles the utf8Title resource.  It
               is also invoked by the utf8-title entry in fontMenu.

       set-visibility(vt/tek,on/off/toggle)
               This  action  sets,  unsets or toggles whether or not the vt or
               tek windows are visible.  It is also invoked from  the  tekshow
               and vthide entries in vtMenu and the vtshow and tekhide entries
               in tekMenu.

       set-visual-bell(on/off/toggle)
               This  action  sets,  unsets or toggles the visualBell resource.
               It is also invoked by the visualbell entry in vtMenu.

       set-vt-font(d/1/2/3/4/5/6/7/e/s [,normalfont [, boldfont]])
               This action sets the font or fonts currently being used in  the
               VTxxx  window.   The  first argument is a single character that
               specifies the font to be used:

               d or D indicate the default font (the font initially used  when
                      xterm was started),

               1  through  7 indicate the fonts specified by the font1 through
                      font7 resources,

               e or E indicate the normal and bold fonts that  have  been  set
                      through  escape  codes  (or  specified as the second and
                      third action arguments, respectively), and

               s or S indicate the font selection (as made by programs such as
                      xfontsel(1)) indicated by the second action argument.

               If  xterm  is  configured  to  support  wide   characters,   an
               additional  two  optional  parameters  are recognized for the e
               argument: wide font and wide bold font.

       smaller-vt-font()
               Set the font to  the  next  smaller  one,  based  on  the  font
               dimensions.  See also set-vt-font().

       soft-reset()
               This  action  resets  the scrolling region.  It is also invoked
               from the softreset entry in vtMenu.  The effect is identical to
               a soft reset (DECSTR) control sequence.

       spawn-new-terminal(params)
               Spawn a new xterm process.  This is available on systems  which
               have a modern version of the process filesystem, e.g., ?/proc?,
               which xterm can read.

               Use  the  ?cwd?  process entry, e.g., /proc/12345/cwd to obtain
               the working directory of the process which is  running  in  the
               current xterm.

               On   systems   which   have  the  ?exe?  process  entry,  e.g.,
               /proc/12345/exe, use this  to  obtain  the  actual  executable.
               Otherwise, use the $PATH variable to find xterm.

               If  parameters  are  given  in the action, pass them to the new
               xterm process.

       start-cursor-extend()
               This  action  is  similar  to  select-extend  except  that  the
               selection is extended to the current text cursor position.

       start-extend()
               This   action  is  similar  to  select-start  except  that  the
               selection is extended to the current pointer location.

       string(string)
               This action inserts the specified text string as if it had been
               typed.   Quotation  is  necessary  if   the   string   contains
               whitespace  or  non-alphanumeric  characters.   If  the  string
               argument begins with the characters ?0x?, it is interpreted  as
               a hex character constant.

       tek-copy()
               This  action  copies  the  escape  codes  used  to generate the
               current window contents to a  file  in  the  current  directory
               beginning  with  the  name  COPY.   It is also invoked from the
               tekcopy entry in tekMenu.

       tek-page()
               This action clears the Tektronix window.  It is also invoked by
               the tekpage entry in tekMenu.

       tek-reset()
               This action resets the Tektronix window.  It is also invoked by
               the tekreset entry in tekMenu.

       vi-button()
               Handles a button  event  (other  than  press  and  release)  by
               echoing  a  control  sequence  computed  from  the event's line
               number in the screen relative to the current line:

                   ESC ^P

               or

                   ESC ^N

               according to whether the event is before, or after the  current
               line,  respectively.   The ^N (or ^P) is repeated once for each
               line that the event differs from the current line.  The control
               sequence is omitted altogether if the button event  is  on  the
               current line.

       visual-bell()
               This action flashes the window quickly.

       The Tektronix window also has the following action:

       gin-press(l/L/m/M/r/R)
               This action sends the indicated graphics input code.

   Default Key Bindings
       The default bindings in the VTxxx window use the SELECT token, which is
       set by the selectToClipboard resource.  These are for the vt100 widget:

                     Shift <KeyPress> Prior:scroll-back(1,halfpage) \n\
                      Shift <KeyPress> Next:scroll-forw(1,halfpage) \n\
                    Shift <KeyPress> Select:select-cursor-start() \
                                            select-cursor-end(SELECT, CUT_BUFFER0) \n\
                    Shift <KeyPress> Insert:insert-selection(SELECT, CUT_BUFFER0) \n\
                            Alt <Key>Return:fullscreen() \n\
                   <KeyRelease> Scroll_Lock:scroll-lock() \n\
               Shift~Ctrl <KeyPress> KP_Add:larger-vt-font() \n\
               Shift Ctrl <KeyPress> KP_Add:smaller-vt-font() \n\
               Shift <KeyPress> KP_Subtract:smaller-vt-font() \n\
                           ~Meta <KeyPress>:insert-seven-bit() \n\
                            Meta <KeyPress>:insert-eight-bit() \n\
                           !Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
                      !Lock Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
            !Lock Ctrl @Num_Lock <Btn1Down>:popup-menu(mainMenu) \n\
                ! @Num_Lock Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
                           ~Meta <Btn1Down>:select-start() \n\
                         ~Meta <Btn1Motion>:select-extend() \n\
                           !Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
                      !Lock Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
            !Lock Ctrl @Num_Lock <Btn2Down>:popup-menu(vtMenu) \n\
                ! @Num_Lock Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
                     ~Ctrl ~Meta <Btn2Down>:ignore() \n\
                            Meta <Btn2Down>:clear-saved-lines() \n\
                       ~Ctrl ~Meta <Btn2Up>:insert-selection(SELECT, CUT_BUFFER0) \n\
                           !Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
                      !Lock Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
            !Lock Ctrl @Num_Lock <Btn3Down>:popup-menu(fontMenu) \n\
                ! @Num_Lock Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
                     ~Ctrl ~Meta <Btn3Down>:start-extend() \n\
                         ~Meta <Btn3Motion>:select-extend() \n\
                            Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
                       Lock Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
             Lock @Num_Lock Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
                  @Num_Lock Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
                                 <Btn4Down>:scroll-back(5,line,m)     \n\
                            Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
                       Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
             Lock @Num_Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
                  @Num_Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
                                 <Btn5Down>:scroll-forw(5,line,m)     \n\
                                    <BtnUp>:select-end(SELECT, CUT_BUFFER0) \n\
                                <BtnMotion>:pointer-motion() \n\
                                  <BtnDown>:pointer-button() \n\
                                    <BtnUp>:pointer-button() \n\
                                  <BtnDown>:ignore()

       The  default  bindings  in  the Tektronix window are analogous but less
       extensive.  These are for the tek4014 widget:

                            ~Meta<KeyPress>: insert-seven-bit() \n\
                             Meta<KeyPress>: insert-eight-bit() \n\
                           !Ctrl <Btn1Down>: popup-menu(mainMenu) \n\
                      !Lock Ctrl <Btn1Down>: popup-menu(mainMenu) \n\
            !Lock Ctrl @Num_Lock <Btn1Down>: popup-menu(mainMenu) \n\
                 !Ctrl @Num_Lock <Btn1Down>: popup-menu(mainMenu) \n\
                           !Ctrl <Btn2Down>: popup-menu(tekMenu) \n\
                      !Lock Ctrl <Btn2Down>: popup-menu(tekMenu) \n\
            !Lock Ctrl @Num_Lock <Btn2Down>: popup-menu(tekMenu) \n\
                 !Ctrl @Num_Lock <Btn2Down>: popup-menu(tekMenu) \n\
                      Shift ~Meta<Btn1Down>: gin-press(L) \n\
                            ~Meta<Btn1Down>: gin-press(l) \n\
                      Shift ~Meta<Btn2Down>: gin-press(M) \n\
                            ~Meta<Btn2Down>: gin-press(m) \n\
                      Shift ~Meta<Btn3Down>: gin-press(R) \n\
                            ~Meta<Btn3Down>: gin-press(r)

   Custom Key Bindings
       You can modify the translations resource by overriding parts of it,  or
       merging your resources with it.

       Here  is  an  example  which  uses  shifted select/paste to copy to the
       clipboard, and unshifted select/paste for the  primary  selection.   In
       each  case,  a (different) cut buffer is also a target or source of the
       select/paste operation.  It is important to remember however, that  cut
       buffers  store  data in ISO-8859-1 encoding, while selections can store
       data in a variety of formats  and  encodings.   While  xterm  owns  the
       selection,  it  highlights it.  When it loses the selection, it removes
       the  corresponding  highlight.   But  you  can  still  paste  from  the
       corresponding cut buffer.

           *VT100*translations:    #override \n\
              ~Shift~Ctrl<Btn2Up>: insert-selection(PRIMARY, CUT_BUFFER0) \n\
               Shift~Ctrl<Btn2Up>: insert-selection(CLIPBOARD, CUT_BUFFER1) \n\
              ~Shift     <BtnUp> : select-end(PRIMARY, CUT_BUFFER0) \n\
               Shift     <BtnUp> : select-end(CLIPBOARD, CUT_BUFFER1)

       In  the  example,  the  class name VT100 is used rather than the widget
       name.  These are different; a class name could apply to more  than  one
       widget.   A  leading ?*? is used because the widget hierarchy above the
       vt100 widget depends on whether the toolbar support  is  compiled  into
       xterm.

       Most  of  the  predefined translations are related to the mouse, with a
       few that use some of the special keys on  the  keyboard.   Applications
       use   special   keys  (function-keys,  cursor-keys,  keypad-keys)  with
       modifiers (shift, control, alt).  If xterm defines a translation for  a
       given   combination   of  special  key  and  modifier,  that  makes  it
       unavailable for use by applications within the terminal.  For instance,
       one might extend the use of Page Up and Page Down keys seen here:

               Shift <KeyPress> Prior : scroll-back(1,halfpage) \n\
               Shift <KeyPress> Next  : scroll-forw(1,halfpage) \n\

       to the Home and End keys:

               Shift <KeyPress> Home : scroll-to(begin) \n\
               Shift <KeyPress> End  : scroll-to(end)

       but  then  shift-Home  and  shift-End  would  then  be  unavailable  to
       applications.

       Not  everyone  finds the three-button mouse bindings easy to use.  In a
       wheel mouse, the middle button might be the wheel.  As an  alternative,
       you could add a binding using shifted keys:

           *VT100*translations:      #override \n\
               Shift <Key>Home:    copy-selection(SELECT) \n\
               Shift <Key>Insert:  copy-selection(SELECT) \n\
               Ctrl Shift <Key>C:  copy-selection(SELECT) \n\
               Ctrl Shift <Key>V:  insert-selection(SELECT)

       You  would still use the left- and right-mouse buttons (typically 1 and
       3) for beginning and extending selections.

       Besides mouse problems, there  are  also  keyboards  with  inconvenient
       layouts.  Some lack a numeric keypad, making it hard to use the shifted
       keypad  plus  and minus bindings for switching between font sizes.  You
       can work around that by assigning the actions to more readily  accessed
       keys:

           *VT100*translations:      #override \n\
               Ctrl <Key> +:       larger-vt-font() \n\
               Ctrl <Key> -:       smaller-vt-font()

       The  keymap  feature allows you to switch between sets of translations.
       The sample below shows how the keymap()  action  may  be  used  to  add
       special keys for entering commonly-typed words:

           *VT100.Translations: #override <Key>F13: keymap(dbx)
           *VT100.dbxKeymap.translations: \
                   <Key>F14:       keymap(None) \n\
                   <Key>F17:       string("next") \n\
                                   string(0x0d) \n\
                   <Key>F18:       string("step") \n\
                                   string(0x0d) \n\
                   <Key>F19:       string("continue") \n\
                                   string(0x0d) \n\
                   <Key>F20:       string("print ") \n\
                                   insert-selection(PRIMARY, CUT_BUFFER0)

   Default Scrollbar Bindings
       Key  bindings are normally associated with the vt100 or tek4014 widgets
       which act as terminal emulators.  Xterm's scrollbar (and toolbar if  it
       is  configured)  are  separate widgets.  Because all of these use the X
       Toolkit,  they  have  corresponding  translations   resources.    Those
       resources  are  distinct,  and  match  different  patterns,  e.g.,  the
       differences in widget-name and number of levels of widgets  which  they
       may contain.

       The  scrollbar widget is a child of the vt100 widget.  It is positioned
       on top of the vt100 widget.  Toggling the scrollbar on and  off  causes
       the vt100 widget to resize.

       The  default  bindings  for  the scrollbar widget use only mouse-button
       events:

              <Btn5Down>: StartScroll(Forward) \n\
              <Btn1Down>: StartScroll(Forward) \n\
              <Btn2Down>: StartScroll(Continuous) MoveThumb() NotifyThumb() \n\
              <Btn3Down>: StartScroll(Backward) \n\
              <Btn4Down>: StartScroll(Backward) \n\
              <Btn2Motion>: MoveThumb() NotifyThumb() \n\
              <BtnUp>:    NotifyScroll(Proportional) EndScroll()

       Events which the scrollbar widget does not recognize at all are lost.

       However, at startup, xterm augments these translations with the default
       translations used for the vt100  widget,  together  with  the  resource
       ?actions?  which  those  translations  use.   Because the scrollbar (or
       menubar) widgets do not recognize these actions (but because it  has  a
       corresponding translation), they are passed on to the vt100 widget.

       This augmenting of the scrollbar's translations has a few limitations:

       ?   Xterm  knows  what  the  default  translations are, but there is no
           suitable library interface for determining  what  customizations  a
           user  may have added to the vt100 widget.  All that xterm can do is
           augment the scrollbar widget to give it the same starting point for
           further customization by the user.

       ?   Events in the gap between the widgets may be lost.

       ?   Compose sequences begun in one widget cannot be  completed  in  the
           other,  because  the  input  methods  for  each widget do not share
           context information.

       Most customizations of the scrollbar translations do  not  concern  key
       bindings.   Rather, users are generally more interested in changing the
       bindings of the mouse buttons.  For example, some people  prefer  using
       the  left pointer button for dragging the scrollbar thumb.  That can be
       set up by altering the translations resource, e.g.,

           *VT100.scrollbar.translations:  #override \n\
              <Btn5Down>:     StartScroll(Forward) \n\
              <Btn1Down>:     StartScroll(Continuous) MoveThumb() NotifyThumb() \n\
              <Btn4Down>:     StartScroll(Backward) \n\
              <Btn1Motion>:   MoveThumb() NotifyThumb() \n\
              <BtnUp>:        NotifyScroll(Proportional) EndScroll()

CONTROL SEQUENCES AND KEYBOARD
       Applications can send sequences of characters to the terminal to change
       its behavior.  Often they are referred to as ?ANSI escape sequences? or
       just plain ?escape sequences? but both terms are misleading:

       ?   ANSI x3.64 (obsolete) which was replaced by ISO 6429 (ECMA-48) gave
           rules for the format of these sequences of characters.

       ?   While the original VT100 was claimed to be ANSI-compatible (against
           x3.64), there is no freely available version of the  ANSI  standard
           to  show  where  the  VT100  differs.   Most of the documents which
           mention the ANSI standard have additions not found in the  original
           (such  as  those based on ansi.sys).  So this discussion focuses on
           the ISO standards.

       ?   The standard describes only sequences sent from  the  host  to  the
           terminal.   There is no standard for sequences sent by special keys
           from the terminal to the host.  By  convention  (and  referring  to
           existing terminals), the format of those sequences usually conforms
           to the host-to-terminal standard.

       ?   Some  of  xterm's  sequences  do  not fit into the standard scheme.
           Technically those are ?unspecified?.  As  an  example,  DEC  Screen
           Alignment Test (DECALN) is this three-character sequence:

               ESC # 8

       ?   Some  sequences fit into the standard format, but are not listed in
           the standard.  These include the  sequences  used  for  setting  up
           scrolling margins and doing forward/reverse scrolling.

       ?   Some   of   the  sequences  (in  particular,  the  single-character
           functions such as tab and backspace)  do  not  include  the  escape
           character.

       With  all  of  that  in mind, the standard refers to these sequences of
       characters as ?control sequences?.

       Xterm  Control  Sequences  lists  the  control   sequences   which   an
       application can send xterm to make it perform various operations.  Most
       of  these operations are standardized, from either the DEC or Tektronix
       terminals, or from more widely used standards such as ISO-6429.

       A few examples of usage are given in this section.

   Window and Icon Titles
       Some scripts use echo with options -e and  -n  to  tell  the  shell  to
       interpret  the  string  ?\e?  as the escape character and to suppress a
       trailing newline on output.  Those are not portable,  nor  recommended.
       Instead, use printf (POSIX).

       For  example,  to set the window title to ?Hello world!?, you could use
       one of these commands in a script:

           printf '\033]2;Hello world!\033\\'
           printf '\033]2;Hello world!\007'
           printf '\033]2;%s\033\\' "Hello world!"
           printf '\033]2;%s\007' "Hello world!"

       The printf command interprets the octal value ?\033?  for  escape,  and
       (since  it  was  not given in the format) omits a trailing newline from
       the output.

       Some programs (such as screen(1)) set both window- and  icon-titles  at
       the same time, using a slightly different control sequence:

           printf '\033]0;Hello world!\033\\'
           printf '\033]0;Hello world!\007'
           printf '\033]0;%s\033\\' "Hello world!"
           printf '\033]0;%s\007' "Hello world!"

       The  difference  is  the  parameter  ?0?  in each command.  Most window
       managers will honor either window title or icon title.  Some will  make
       a  distinction  and allow you to set just the icon title.  You can tell
       xterm to ask for  this  with  a  different  parameter  in  the  control
       sequence:

           printf '\033]1;Hello world!\033\\'
           printf '\033]1;Hello world!\007'
           printf '\033]1;%s\033\\' "Hello world!"
           printf '\033]1;%s\007' "Hello world!"

   Special Keys
       Xterm,  like  any VT100-compatible terminal emulator, has two modes for
       the special keys (cursor-keys, numeric keypad,  and  certain  function-
       keys):

       ?   normal  mode,  which  makes  the  special  keys  transmit  ?useful?
           sequences such as the control sequence for cursor-up when  pressing
           the up-arrow, and

       ?   application  mode,  which  uses  a  different control sequence that
           cannot be mistaken for the ?useful? sequences.

       The main difference between the two modes is that normal mode sequences
       start with CSI (escape [) and application mode sequences start with SS3
       (escape O).

       The terminal is initialized into one of these two  modes  (usually  the
       normal  mode), based on the terminal description (termcap or terminfo).
       The terminal description also has capabilities  (strings)  defined  for
       the keypad mode used in curses applications.

       There  is  a problem in using the terminal description for applications
       that are not  intended  to  be  full-screen  curses  applications:  the
       definitions of special keys are only correct for this keypad mode.  For
       example,  some  shells  (unlike ksh(1), which appears to be hard-coded,
       not even using termcap) allow their users  to  customize  key-bindings,
       assigning shell actions to special keys.

       ?   bash(1)  allows constant strings to be assigned to functions.  This
           is only successful if the terminal is  initialized  to  application
           mode  by  default, because bash lacks flexibility in this area.  It
           uses a (less expressive than bash's)  readline  scripting  language
           for  setting  up  key  bindings,  which  relies  upon  the  user to
           statically enumerate the possible  bindings  for  given  values  of
           $TERM.

       ?   zsh(1)  provides  an  analogous  feature,  but  it  accepts runtime
           expressions, as well as providing a $terminfo  array  for  scripts.
           In particular, one can use the terminal database, transforming when
           defining a key-binding.  By transforming the output so that CSI and
           SS3 are equated, zsh can use the terminal database to obtain useful
           definitions  for  its  command-line  use  regardless of whether the
           terminal uses normal or application mode  initially.   Here  is  an
           example:

               [[ "$terminfo[kcuu1]" == "^[O"* ]] && \
               bindkey -M viins "${terminfo[kcuu1]/O/[}" \
               vi-up-line-or-history

   Changing Colors
       A  few  shell  programs  provide the ability for users to add color and
       other video attributes to the shell prompt strings.  Users can do  this
       by  setting $PS1 (the primary prompt string).  Again, bash and zsh have
       provided features not found in ksh.  There is a problem,  however:  the
       prompt's  width  on  the screen will not necessarily be the same as the
       number of characters.  Because  there  is  no  guidance  in  the  POSIX
       standard, each shell addresses the problem in a different way:

       ?   bash  treats  characters within ?\[? and ?\]? as nonprinting (using
           no width on the screen).

       ?   zsh treats characters within ?%{? and ?%}? as nonprinting.

       In addition to the difference in syntax, the shells  provide  different
       methods for obtaining useful escape sequences:

       ?   As  noted in Special Keys, zsh initializes the $terminfo array with
           the terminal capabilities.

           It also provides a function echoti  which  works  like  tput(1)  to
           convert  a  terminal  capability  with its parameters into a string
           that can be written to the terminal.

       ?   Shells lacking a comparable feature (such as bash) can  always  use
           the program tput to do this transformation.

       Hard-coded  escape  sequences  are supported by each shell, but are not
       recommended because  those  rely  upon  particular  configurations  and
       cannot be easily moved between different user environments.

ENVIRONMENT
       Xterm sets several environment variables.

   System Independent
       Some variables are used on every system:

       DISPLAY
            is  the  display name, pointing to the X server (see DISPLAY NAMES
            in X(7)).

       TERM
            is set according to the terminfo (or termcap) entry  which  it  is
            using as a reference.

            On  some  systems,  you  may  encounter situations where the shell
            which you use and xterm are built using libraries  with  different
            terminal  databases.   In  that  situation,  xterm  may  choose  a
            terminal description not known to the shell.

       WINDOWID
            is set to the X window id number of the xterm window.

       XTERM_FILTER
            is set if a locale-filter is used.  The value is the  pathname  of
            the filter.

       XTERM_LOCALE
            shows  the  locale which was used by xterm on startup.  Some shell
            initialization scripts may set a different locale.

       XTERM_SHELL
            is set to the pathname of the program which is  invoked.   Usually
            that  is  a  shell  program,  e.g.,  /bin/sh.   Since  it  is  not
            necessarily a shell program however, it is distinct from ?SHELL?.

       XTERM_VERSION
            is set to the string displayed by the -version  option.   That  is
            normally  an  identifier  for the X Window libraries used to build
            xterm, followed by xterm's patch number in parenthesis.  The patch
            number is  also  part  of  the  response  to  a  Secondary  Device
            Attributes (DA) control sequence (see Xterm Control Sequences).

   System Dependent
       Depending  on  your  system  configuration,  xterm  may  also  set  the
       following:

       COLUMNS
            the width of the xterm in characters (cf: ?stty columns?).

            When this variable is set, curses applications (and most  terminal
            programs) will assume that the terminal has this many columns.

            Xterm  would do this for systems which have no ability to tell the
            size of the terminal.  Those are very rare, none  newer  than  the
            mid 1990s when SVR4 became prevalent.

       HOME
            when xterm is configured (at build-time) to update utmp.

       LINES
            the height of the xterm in characters (cf: ?stty rows?).

            When  this variable is set, curses applications (and most terminal
            programs) will assume  that  the  terminal  has  this  many  lines
            (rows).

            Xterm  would do this for systems which have no ability to tell the
            size of the terminal.  Those are very rare, none  newer  than  the
            mid 1990s when SVR4 became prevalent.

       LOGNAME
            when xterm is configured (at build-time) to update utmp.

            Your  configuration  may  have  set LOGNAME; xterm does not modify
            that.  If it is unset, xterm will use USER if it is set.  Finally,
            if neither is set, xterm will use the getlogin(3) function.

       SHELL
            when xterm is configured (at build-time) to update  utmp.   It  is
            also  set  if  you  provide  a  valid  shell  name as the optional
            parameter.

            Xterm sets this to an absolute pathname.   If  you  have  set  the
            variable  to  a relative pathname, xterm may set it to a different
            shell pathname.

            If you have set this to an pathname which does not correspond to a
            valid shell, xterm may unset it, to avoid confusion.

       TERMCAP
            the contents of the termcap entry  corresponding  to  $TERM,  with
            lines  and  columns  values substituted for the actual size window
            you have created.

            This  feature  is,  like  LINES  and  COLUMNS,  used  rarely.   It
            addresses  the same limitation of a few older systems by providing
            a way for termcap-based applications to  get  the  initial  screen
            size.

       TERMINFO
            may  be  defined  to  a  nonstandard  location using the configure
            script.

WINDOW PROPERTIES
       In the output from xprop(1), there are several properties.

   Properties set by X Toolkit
       WM_CLASS
            This shows the instance name and the X resource class, passed to X
            Toolkit during initialization of xterm, e.g.,

                WM_CLASS(STRING) = "xterm", "UXTerm"

       WM_CLIENT_LEADER
            This shows the window-id which xterm provides with an  environment
            variable (WINDOWID), e.g.,

                WM_CLIENT_LEADER(WINDOW): window id # 0x800023

       WM_COMMAND
            This  shows  the command-line arguments for xterm which are passed
            to X Toolkit during initialization, e.g.,

                WM_COMMAND(STRING) = { "xterm", "-class", "UXTerm", "-title", "uxterm", "-u8" }

       WM_ICON_NAME
            This holds the icon title, which different window managers  handle
            in   various   ways.    It  is  set  via  the  iconName  resource.
            Applications can change this using control sequences.

       WM_LOCALE_NAME
            This shows the result  from  the  setlocale(3)  function  for  the
            LC_CTYPE category, e.g.,

                WM_LOCALE_NAME(STRING) = "en_US.UTF-8"

       WM_NAME
            This  holds  the  window  title,  normally  at  the top of xterm's
            window.  It is set  via  the  title  resource.   Applications  can
            change this using control sequences.

   Properties set by Xterm
       X Toolkit does not manage EWMH properties.  Xterm does this directly.

       _NET_WM_ICON_NAME
            stores the icon name.

       _NET_WM_NAME
            stores the title string.

       _NET_WM_PID
            stores the process identifier for xterm's display.

   Properties used by Xterm
       _NET_SUPPORTED
            Xterm  checks  this property on the supporting window to decide if
            the window manager supports specific maximizing styles.  That  may
            include other window manager hints; xterm uses the X library calls
            to manage those.

       _NET_SUPPORTING_WM_CHECK
            Xterm  checks  this  to  ensure  that it will only update the EWMH
            properties for a window manager which claims EWMH compliance.

       _NET_WM_STATE
            This tells xterm whether its window  has  been  maximized  by  the
            window manager, and if so, what type of maximizing:

            _NET_WM_STATE_FULLSCREEN

            _NET_WM_STATE_MAXIMIZED_HORZ

            _NET_WM_STATE_MAXIMIZED_VERT

FILES
       The actual pathnames given may differ on your system.

       /etc/shells
            contains  a  list of valid shell programs, used by xterm to decide
            if the ?SHELL? environment variable should be set for the  process
            started by xterm.

            On  systems  which  have the getusershell function, xterm will use
            that function rather than directly reading  the  file,  since  the
            file may not be present if the system uses default settings.

       /var/run/utmp
            the system log file, which records user logins.

       /var/log/wtmp
            the system log file, which records user logins and logouts.

       /etc/X11/app-defaults/XTerm
            the xterm default application resources.

       /etc/X11/app-defaults/XTerm-color
            the  xterm  color application resources.  If your display supports
            color, use this

                *customization: -color

            in your .Xdefaults file to automatically use  this  resource  file
            rather  than  /etc/X11/app-defaults/XTerm.  If you do not do this,
            xterm uses its compiled-in default resource settings for colors.

       /usr/share/pixmaps
            the directory in which xterm's pixmap icon files are installed.

ERROR MESSAGES
       Most of the fatal error messages from xterm use the following format:

           xterm: Error XXX, errno YYY: ZZZ

       The XXX codes (which are used by xterm as  its  exit-code)  are  listed
       below, with a brief explanation.

       1    ERROR_MISC
            miscellaneous errors, usually accompanied by a specific message,

       11   ERROR_FIONBIO
            main: ioctl() failed on FIONBIO

       12   ERROR_F_GETFL
            main: ioctl() failed on F_GETFL

       13   ERROR_F_SETFL
            main: ioctl() failed on F_SETFL

       14   ERROR_OPDEVTTY
            spawn: open() failed on /dev/tty

       15   ERROR_TIOCGETP
            spawn: ioctl() failed on TIOCGETP

       17   ERROR_PTSNAME
            spawn: ptsname() failed

       18   ERROR_OPPTSNAME
            spawn: open() failed on ptsname

       19   ERROR_PTEM
            spawn: ioctl() failed on I_PUSH/"ptem"

       20   ERROR_CONSEM
            spawn: ioctl() failed on I_PUSH/"consem"

       21   ERROR_LDTERM
            spawn: ioctl() failed on I_PUSH/"ldterm"

       22   ERROR_TTCOMPAT
            spawn: ioctl() failed on I_PUSH/"ttcompat"

       23   ERROR_TIOCSETP
            spawn: ioctl() failed on TIOCSETP

       24   ERROR_TIOCSETC
            spawn: ioctl() failed on TIOCSETC

       25   ERROR_TIOCSETD
            spawn: ioctl() failed on TIOCSETD

       26   ERROR_TIOCSLTC
            spawn: ioctl() failed on TIOCSLTC

       27   ERROR_TIOCLSET
            spawn: ioctl() failed on TIOCLSET

       28   ERROR_INIGROUPS
            spawn: initgroups() failed

       29   ERROR_FORK
            spawn: fork() failed

       30   ERROR_EXEC
            spawn: exec() failed

       32   ERROR_PTYS
            get_pty: not enough ptys

       34   ERROR_PTY_EXEC
            waiting for initial map

       35   ERROR_SETUID
            spawn: setuid() failed

       36   ERROR_INIT
            spawn: can't initialize window

       46   ERROR_TIOCKSET
            spawn: ioctl() failed on TIOCKSET

       47   ERROR_TIOCKSETC
            spawn: ioctl() failed on TIOCKSETC

       49   ERROR_LUMALLOC
            luit: command-line malloc failed

       50   ERROR_SELECT
            in_put: select() failed

       54   ERROR_VINIT
            VTInit: can't initialize window

       57   ERROR_KMMALLOC1
            HandleKeymapChange: malloc failed

       60   ERROR_TSELECT
            Tinput: select() failed

       64   ERROR_TINIT
            TekInit: can't initialize window

       71   ERROR_BMALLOC2
            SaltTextAway: malloc() failed

       80   ERROR_LOGEXEC
            StartLog: exec() failed

       83   ERROR_XERROR
            xerror: XError event

       84   ERROR_XIOERROR
            xioerror: X I/O error

       85   ERROR_ICEERROR
            ICE I/O error

       90   ERROR_SCALLOC
            Alloc: calloc() failed on base

       91   ERROR_SCALLOC2
            Alloc: calloc() failed on rows

       102  ERROR_SAVE_PTR
            ScrnPointers: malloc/realloc() failed

BUGS
       Large  pastes do not work on some systems.  This is not a bug in xterm;
       it is a bug in the pseudo terminal  driver  of  those  systems.   Xterm
       feeds large pastes to the pty only as fast as the pty will accept data,
       but  some  pty  drivers do not return enough information to know if the
       write has succeeded.

       When connected to an input method, it is possible for xterm to hang  if
       the XIM server is suspended or killed.

       Many of the options are not resettable after xterm starts.

       This program still needs to be rewritten.  It should be split into very
       modular  sections, with the various emulators being completely separate
       widgets that do not know about each other.  Ideally, you'd like  to  be
       able  to  pick and choose emulator widgets and stick them into a single
       control widget.

       There needs to be a dialog box to allow entry  of  the  Tek  COPY  file
       name.

AUTHORS
       Far too many people.

       These  contributed  to the X Consortium: Loretta Guarino Reid (DEC-UEG-
       WSL),  Joel  McCormack  (DEC-UEG-WSL),  Terry  Weissman  (DEC-UEG-WSL),
       Edward  Moy  (Berkeley),  Ralph R. Swick (MIT-Athena), Mark Vandevoorde
       (MIT-Athena), Bob McNamara  (DEC-MAD),  Jim  Gettys  (MIT-Athena),  Bob
       Scheifler   (MIT   X  Consortium),  Doug  Mink  (SAO),  Steve  Pitschke
       (Stellar), Ron Newman (MIT-Athena), Jim Fulton (MIT X Consortium), Dave
       Serisky (HP), Jonathan Kamens (MIT-Athena).

       Beginning with XFree86, there were far more identifiable  contributors.
       The THANKS file in xterm's source lists 243 in June 2022.  Keep in mind
       these:  Jason  Bacon,  Jens  Schweikhardt, Ross Combs, Stephen P. Wall,
       David Wexelblat, and Thomas Dickey (invisible-island.net).

SEE ALSO
       resize(1), luit(1), uxterm(1), X(7), Xcursor(7), pty(4), tty(4)

       Xterm Control Sequences (this is the file ctlseqs.ms).

           https://invisible-island.net/xterm/xterm.html
           https://invisible-island.net/xterm/manpage/xterm.html
           https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
           https://invisible-island.net/xterm/xterm.faq.html
           https://invisible-island.net/xterm/xterm.log.html

       X Toolkit Intrinsics ? C Language Interface (Xt),
       Joel McCormack, Paul Asente, Ralph R. Swick (1994),
       Thomas E. Dickey (2019).

       Inter-Client Communication Conventions Manual (ICCCM),
       David Rosenthal and Stuart W. Marks (version 2.0, 1994).

       Extended Window Manager Hints (EWMH),
       X Desktop Group (version 1.3, 2005).

       EWMH uses UTF8_STRING pervasively without defining it, but does mention
       the ICCCM.  Version 2.0 of the ICCCM does not address UTF-8.   That  is
       an extension added in XFree86.

       ?   Markus Kuhn summarized this in UTF-8 and Unicode FAQ for Unix/Linux
           (2001), in the section ?Is X11 ready for Unicode??

           https://www.cl.cam.ac.uk/~mgk25/unicode.html

       ?   Juliusz  Chroboczek  proposed  the  UTF8_STRING  selection  atom in
           1999/2000, which became part of the ICCCM in XFree86.

           https://www.irif.fr/~jch/software/UTF8_STRING/

           An Xorg developer removed that part of the  documentation  in  2004
           when  incorporating other work from XFree86 into Xorg.  The feature
           is still supported in Xorg, though undocumented as of 2019.

Patch #390                        2024-02-19                          XTERM(1)
NOTE:To continue learning please use the SEE ALSO section of each man page