xterm

XTERM(1)                                                              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 (VTxxx) and Tektronix 4014  compatible  termi‐
       nals  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), Tek‐
       tronix 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 termi‐
       nal 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  win‐
       dow.

EMULATIONS
       The  VT102  emulation  is fairly complete, but does not support autore‐
       peat.  Double-size characters  are  displayed  properly  if  your  font
       server  supports  scalable fonts.  The VT220 emulation does not support
       soft fonts, it is otherwise complete.   Termcap(5)  entries  that  work
       with  xterm  include  an  optional  platform-specific  entry,  “xterm,”
       “vt102,” “vt100,” “ansi” and “dumb.”  xterm automatically searches  the
       termcap  file  in this order for these entries and then sets the “TERM”
       and the “TERMCAP” environment variables.  You  may  also  use  “vt220,”
       but  must  set  the  terminal  emulation  level  with the decTerminalID
       resource.  (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  con‐
       trol  through  a  set  of  escape sequences different from the standard
       VT102 escape sequences.  (See the Xterm Control Sequences document.)

       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  direc‐
       tory xterm is started in, or the home directory for a login xterm).

       Not all of the features described in this manual are necessarily avail‐
       able 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 VT102 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 termcap(5)
       entry for xterm allows the visual editor vi(1) to switch to the  alter‐
       nate  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 VT102 or Tektronix mode, there are escape sequences to change
       the name of the windows.  Additionally, in VT102 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 (cur‐
       rently  button-press  and  release events, and button-motion events) as
       keyboard control sequences.  See Xterm Control Sequences for details.

OPTIONS
       The xterm terminal emulator accepts the standard X Toolkit command line
       options  as  well  as many application-specific options.  If the option
       begins with a `+' instead of a `-',  the  option  is  restored  to  its
       default  value.  The -version and -help options are interpreted even if
       xterm cannot open the display, and are useful for testing and  configu‐
       ration scripts:

       -version
               This  causes  xterm  to  print a version number to the standard
               output.

       -help   This causes xterm to print out a verbose message describing its
               options,  one per line.  The message is written to the standard
               output.  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.

       One parameter (after all options) may be given.  That overrides xterm's
       built-in  choice  of  shell  program.   Normally xterm checks the SHELL
       variable.  If that is not set, xterm tries to  use  the  shell  program
       specified  in  the  password  file.   If  that  is  not set, xterm uses
       /bin/sh.  If the parameter names an executable file,  xterm  uses  that
       instead.   The parameter must be an absolute path, or name a file found
       on the user's PATH (and thereby construct an absolute  path).   The  -e
       option  cannot be used with this parameter since it uses all parameters
       following the option.

       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 cur‐
               sor whenever the focus is lost or the pointer leaves  the  win‐
               dow.

       +ah     This  option  indicates  that xterm should do text cursor high‐
               lighting 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.
               This  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.

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

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

       -bc     turn on 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
               cursorOffTime 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 dis‐
               play  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  the  section  specifying character
               classes.  and discussion of the charClass resource.

       -cjk_width
               Set the cjkWidth resource to “true”.  When turned  on,  charac‐
               ters  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 pro‐
               grams 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.

       -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 param‐
               eter.

       -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 col‐
               ors:  the vt100 foreground and background colors, its text cur‐
               sor 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 col‐
               ors.  The option sets the dynamicColors option to “true”.

       -e program [ arguments ... ]
               This option specifies the program (and its command  line  argu‐
               ments)  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.
               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 sup‐
               ported by using luit.  The -lc option should be used instead of
               -en for systems with locale support.

       -fb font
               This  option  specifies  a font to be used when displaying bold
               text.  This font must be the same height and width as the  nor‐
               mal  font.   If  only one of the normal or bold fonts is speci‐
               fied, it will be used as the normal font and the bold font will
               be  produced  by  overstriking this font.  The default is to do
               overstriking of the normal font.  See also  the  discussion  of
               boldFont, boldMode and alwaysBoldMode resources.

       -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.   See  also  the renderFont resource, which
               combines with this to determine whether FreeType fonts are ini‐
               tially active.

       -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”.

       -fd pattern
               This option sets the pattern for  double-width  fonts  selected
               from  the FreeType library if support for that library was com‐
               piled 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.

       -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 dou‐
               ble-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  selec‐
               tion.  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  selec‐
               tion.  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 win‐
               dow, 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-ter‐
               minal's sense of the stty 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  refer‐
               ence, if available.

       -im     Turn  on the useInsertMode resource, which forces use of insert
               mode by adding appropriate entries to the  TERMCAP  environment
               variable.

       +im     Turn off the useInsertMode resource.

       -into windowId
               Given  an  X  window identifier (a decimal integer), xterm will
               reparent its top-level shell widget to that  window.   This  is
               used to embed xterm within other applications.

       -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  fea‐
               ture on or off.

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

       -k8     This   option   sets   the   allowC1Printable  resource.   When
               allowC1Printable is set, xterm overrides the mapping of C1 con‐
               trol 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”, “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, tcapFunction‐
               Keys and sunKeyboard, using the Sun/PC keyboard layout.

       -l      Turn logging on.  Normally logging is  not  supported,  due  to
               security  concerns.   Some  versions  of xterm may have logging
               enabled.  The logfile is written to the  directory  from  which
               xterm is invoked.  The filename is generated, 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 corre‐
               sponds 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.  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 con‐
               sistent 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 /var/log/wtmp entry  (if  configured  to  do  so),
               whereas xterm -e does not.

       -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 maximize its layout on startup.

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

       -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 cur‐
               sor.   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  bold‐
               Colors resource).

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

       -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.

       -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.

       -si     This  option indicates that output to a window should not auto‐
               matically 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 64.

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

       +sm     This option indicates that xterm should not set up session man‐
               ager 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  VT102 mode.  Switching between the two
               windows is done using the “Options” menus.  Termcap(5)  entries
               that   work   with   xterm   “tek4014,”  “tek4015,”  “tek4012,”
               “tek4013,” “tek4010,” and “dumb.”  xterm automatically searches
               the  termcap file in this order for these entries and then sets
               the “TERM” and the “TERMCAP” environment variables.

       +t      This option indicates that xterm should start in VT102 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,  and
               vt220  (the  "vt"  is  optional).   The  default is vt100.  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  func‐
               tions,  similar  to  the  stty 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 termi‐
               nal  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 it
               on and off, use the wideChars resource.

               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 makes the cursor underlined instead of a box.

       +uc     This option makes 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, dis‐
               ables 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 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  you  do  not set this resource to “true”, xterm will ignore
               the escape sequence which turns UTF-8 mode  on  and  off.   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 start‐
               ing 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 immedi‐
               ately, 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  con‐
               sole  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 spe‐
               cialized 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:
                      -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.

       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  “*tekGe‐
               ometry” resource.

        #geom  This  option  specifies the preferred position of the icon win‐
               dow.   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 toolkit option -name  (see  below).
               The default icon name is the application name.

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

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

       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.  xterm uses the X Toolkit default, which is “XtDefault‐
               Foreground”.

       -bg color
               This  option  specifies  the color to use for the background of
               the window.  The default is “XtDefaultBackground.”

       -bw number
               This option specifies the width in pixels of  the  border  sur‐
               rounding 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 win‐
               dow 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 default is “XtDefaultForeground.”

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

       -font font
               This is the same as -fn.

       -geometry geometry
               This option specifies the preferred size and  position  of  the
               VT102 window; see X(7).

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

       -name name
               This  option  specifies  the  application  name   under   which
               resources  are  to  be  obtained,  rather than the default exe‐
               cutable file name.  Name should not contain “.” or “*”  charac‐
               ters.

       -rv     This option indicates that reverse video should be simulated by
               swapping the foreground and background colors.

       +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.   The
               default  title  is  the  command  line  specified  after the -e
               option, if any, otherwise the application name.

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

RESOURCES
       The program understands all of the core X Toolkit  resource  names  and
       classes.  Application specific resources (e.g., "XTerm.NAME") follow:

       backarrowKeyIsErase (class BackarrowKeyIsErase)
               Tie   the  VTxxx  backarrowKey  and  ptyInitialErase  resources
               together by setting the DECBKM state according to  whether  the
               initial  value of stty erase is a backspace (8) or delete (127)
               character.  The default is “false”, which  disables  this  fea‐
               ture.

       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  instead  of   standard   escape
               sequences.  See also the keyboardType resource.

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

       iconName (class IconName)
               Specifies the icon name.  The default is the application name.

       keyboardType (class KeyboardType)
               Enables  one  (or none) of the various keyboard-type resources:
               hpFunctionKeys, scoFunctionKeys, sunFunctionKeys, tcapFunction‐
               Keys  and  sunKeyboard.   The resource's value should be one of
               the  corresponding  strings  “hp”,  “sco”,  “sun”,  “tcap”   or
               “vt220”.  The individual resources are provided for legacy sup‐
               port; this resource is simpler to use.

       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.”

       messages (class Messages)
               Specifies  whether write access to the terminal is allowed ini‐
               tially.  See mesg(1).  The default is “true”.

       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 unneces‐
                sary  (and  very  large) fonts, e.g., in a locale having UTF-8
                encoding.  The default is an empty string, which uses the cur‐
                rent locale setting.

                Set  it  to  “C”  to  achieve  the  best performance using the
                default menu resource settings.  If you  happen  to  be  using
                localized menu resources, set the resource accordingly.

       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.

       ptyHandshake (class PtyHandshake)
               If “true”, xterm will perform handshaking during initialization
               to ensure that the parent and child processes update  the  utmp
               and  stty  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 initializa‐
               tion 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.   See  also the ttyModes resource, which may modify this.
               The default is “false”.

       ptySttySize (class PtySttySize)
               If “true”, xterm will reset the screen size after terminal ini‐
               tialization 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 intial screen size, e.g., via window manager inter‐
               action.   See  also waitForMap which waits for a handshake-mes‐
               sage giving the pseudo-terminal's notion of  the  screen  size.
               The default is “false” on Linux and OS X systems, “true” other‐
               wise.

       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”.

       scoFunctionKeys (class ScoFunctionKeys)
               Specifies whether or not SCP Function Key escape  codes  should
               be  generated  for  function  keys  instead  of standard escape
               sequences.  See also the keyboardType resource.

       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  instead  of standard escape
               sequences.  See also the keyboardType resource.

       sunKeyboard (class SunKeyboard)
               Specifies whether or  not  Sun/PC  keyboard  layout  should  be
               assumed  rather  than DEC VT220.  This causes the keypad “+' to
               be mapped to “,'.  and CTRL F1-F12 to F11-F20, depending on the
               setting  of  the  ctrlFKeys  resource.  so xterm emulates a DEC
               VT220 more accurately.  Otherwise (the  default,  with  sunKey‐
               board  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 the document 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 should  be  generated  for  function
               keys  instead  of standard escape sequences.  See also the key‐
               boardType resource.

       termName (class TermName)
               Specifies the terminal type name to be set in the TERM environ‐
               ment 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 and the
               characters to which they  may  be  bound.   Allowable  keywords
               include:  brk,  dsusp,  eof,  eol,  eol2, erase, erase2, flush,
               intr, kill, lnext, quit,  rprnt,  start,  status,  stop,  susp,
               swtch  and weras.  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 lit‐
               eral backslash in an X resource escapes the next character.

               This is very useful for overriding the  default  terminal  set‐
               tings  without  having  to  do  an  stty 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.

               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.  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.”

       waitForMap (class WaitForMap)
               Specifies whether or not xterm should wait for the initial win‐
               dow 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.,
               according to the window manager.  Otherwise, it uses  the  size
               as  given in resource values or command-line option -geom.  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 iconi‐
               fied 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.”

   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  pat‐
       terns  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  applica‐
               tion  icon  windows.   Some  window  managers will allow you to
               enter keystrokes into the active icon window.  The  default  is
               “false.”

       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.”

       allowSendEvents (class AllowSendEvents)
               Specifies  whether or not synthetic key and button events (gen‐
               erated using the X protocol SendEvent request) should be inter‐
               preted  or  discarded.  The default is “false” meaning they are
               discarded.  Note that allowing such events creates a very large
               security   hole,   and   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 “false.”

               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  sup‐
                  ports.  This is a constant, depending on how it is compiled,
                  typically 16.  It does not change if you alter resource set‐
                  tings, 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  modi‐
               fier  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 com‐
               bining  the Alt- and Meta-modifiers, you can create correspond‐
               ing combinations  of  ESC-prefix  and  8-bit  characters.   The
               default is “false.”

       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 han‐
               dle 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

       alwaysHighlight (class AlwaysHighlight)
               Specifies  whether  or  not xterm should always display a high‐
               lighted 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.  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.”

       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 the xterm uses a 50 millisecond time‐
               out to await input (i.e., to support the  Xaw3d  arrow  scroll‐
               bar).  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 con‐
               trol  sequence.   The  default (backspace) 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 man‐
               ager 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  over‐
               striking.  There is no default for this resource.

       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  selec‐
               tions (font1 through font6).  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 pro‐
               vide the bold font that xterm requests, but the result  is  not
               always  readable.  XFree86 provides a feature which can be used
               to suppress the scaling.  In the X server's configuration  file
               (e.g.,  "/etc/X11/XFree86"), you can add ":unscaled" to the end
               of the directory specification for the "misc" fonts, which com‐
               prise  the fixed-pitch fonts that are used by xterm.  For exam‐
               ple
                       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  specifica‐
               tion 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 use‐
               ful 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.”

       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.

       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.

       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,  gray30, red, green, yellow, a customizable 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  “XtDe‐
               faultForeground.”

       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 “XtDe‐
               faultForeground.”

       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.”

       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.”

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

       colorUL (class ColorUL)
               This specifies the color to use to display  underlined  charac‐
               ters  if the “colorULMode” resource is enabled.  The default is
               “XtDefaultForeground.”

       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 4.  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.”

       cursorBlink (class CursorBlink)
               Specifies whether to make the cursor  blink.   The  default  is
               “false.”

       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.

       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.”

       cursorUnderLine (class CursorUnderLine)
               Specifies whether to make the cursor underlined or a box.   The
               default is “false.”

       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.”

       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 100.

       defaultString (class DefaultString)
               Specify the character (or string) which xterm  will  substitute
               when  pasted  text  includes a character which cannot be repre‐
               sented 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  lay‐
               out on the screen as the original text.

       deleteIsDEL (class DeleteIsDEL)
               Specifies  whether  the Delete key on the editing keypad should
               send DEL (127) or the VT220-style Remove escape sequence.   The
               default is “false,” for the latter.

       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.

       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,SetSelec‐
               tion,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.

               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).

               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.

               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 pre‐
               sented as a single character with the  eighth  bit  turned  on.
               The  terminal is put into 8-bit mode.  If “false”, Meta charac‐
               ters are converted into a two-character sequence with the char‐
               acter  itself  preceded by ESC.  On startup, xterm tries to put
               the terminal into 7-bit mode.  The metaSendsEscape and altSend‐
               sEscape resources may override this.  The default is “true.”

               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 function in curses.

               Note  that  the Alt key is not necessarily the same as the Meta
               modifier.  xmodmap lists your key modifiers.  X  defines  modi‐
               fiers  for  shift,  (caps) lock and control, as well as 5 addi‐
               tional modifiers which are generally used to configure key mod‐
               ifiers.   xterm inspects the same information to find the modi‐
               fier 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.

       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, which does not override anything.

       faceName (class FaceName)
               Specify the  pattern  for  fonts  selected  from  the  FreeType
               library  if  support  for that library was compiled into xterm.
               There is no default.  If not specified, or if there is no match
               for both normal and bold fonts, xterm uses the font and related
               resources.

       faceNameDoublesize (class FaceNameDoublesize)
               Specify an double-width font for  cases  where  an  application
               requires this, e.g., in CJK applications.  There is no default.
               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 “14.”  On the VT Fonts menu, this corresponds to
               the Default entry.

               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.

       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.

       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.  For instance,
               cat'ing a large file to the screen does this.

       font1 (class Font1)
               Specifies the name of the first alternative font.

       font2 (class Font2)
               Specifies the name of the second alternative font.

       font3 (class Font3)
               Specifies the name of the third alternative font.

       font4 (class Font4)
               Specifies the name of the fourth alternative font.

       font5 (class Font5)
               Specifies the name of the fifth alternative font.

       font6 (class Font6)
               Specifies the name of the sixth alternative font.

       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.

       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 char‐
               acters, and draws them directly.  The default is “false.”

       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.

       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 mod‐
               ified 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 com‐
               pares 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 VT102  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 high‐
               lightColor  to override the reversed foreground/background col‐
               ors 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   fg/fg (useless)
               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  high‐
               lightTextColor  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)
               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 posi‐
               tions 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".

       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 XtCInputMethod)
               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  charac‐
               ters.  It is implemented only for TrueType fonts.

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

       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”.

       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.

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

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

       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 accord‐
                   ing 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 subre‐
               sources 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  subre‐
               sources  are  found,  the  normal  fonts such as "*vt100.font",
               etc., are used.  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
               should put those within a shell  script  to  execute  the  con‐
               verter, and set this resource to point to the shell script.

       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.”

       metaSendsEscape (class MetaSendsEscape)
               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  eightBit‐
               Input 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  val‐
               ues,  and  allows up to mkSamplePass mismatches before the test
               fails.  The default (for the allowed number of  mismatches)  is
               256.

       mkSampleSize (class MkSampleSize)
               With  mkSamplePass, this specifies a startup test used for ini‐
               tializing wide character width calculations.  The default (num‐
               ber of characters to check) is 1024.

       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

       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”:

               Set it to -1 to disable it.
               Set it to 0 to use the old/obsolete behavior.
               Set it to 1 to prefix modified sequences with CSI.
               Set it to 2 to force the modifier to be the second parameter if
               it would otherwise be the first.
               Set  it to 3 to mark 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 modifyCur‐
               sorKeys:

               Set it to -1 to permit the user to use shift- and control-modi‐
               fiers to construct function-key strings using the normal encod‐
               ing scheme.
               Set it to 0 to use the old/obsolete behavior.
               Set it to 1 to prefix modified sequences with CSI.
               Set it to 2 to force the modifier to be the second parameter if
               it would otherwise be the first.
               Set  it to 3 to mark 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.

               As  a  special  case,  legacy (when oldFunctionKeys is true) or
               vt220 (when sunKeyboard is true) keyboards interpret  only  the
               Control-modifier   when  constructing  numbered  function-keys.
               This is done to provide compatible keyboards for DEC VT220  and
               related terminals that implement user-defined keys (UDK).

       modifyOtherKeys (class ModifyOtherKeys)
               Like  modifyCursorKeys,  tells  xterm  to  construct  an escape
               sequence for other keys (such as "2")  when  modified  by  Con‐
               trol-,  Alt- or Meta-modifiers.  This feature does not apply to
               function keys and well-defined keys such as ESC or the  control
               keys.  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 con‐
                    trol character cases, e.g., Control-Space to make a NUL.

               2    enables  this  feature  for  keys including the exceptions
                    listed.

       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  asyn‐
               chronously.  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.

       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 control sequences for func‐
               tion keys F1 to F4, for compatibility with X Consortium  xterm.
               Otherwise,  it  uses the VT100-style codes for PF1 to PF4.  The
               default is “false.”

       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 section (see POINTER USAGE).  Multi‐
               ple  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.

               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 a “word” as  determined  by  the  regular  expression
                  which follows in the resource value.

               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  deter‐
               mines  the  maximum  number of clicks by the onXClicks resource
               values which are set.

       openIm (class XtCOpenIm)
               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.”

       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.”

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

       preeditType (class XtCPreeditType)
               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.  A
               “0” disables the attributes.  A “1” prints the  normal  set  of
               attributes  (bold, underline, inverse and blink) as VT100-style
               control sequences.  A “2” prints ANSI color attributes as well.
               The default is “1.”

       printerAutoClose (class PrinterAutoClose)
               If  “true”,  xterm  will  close  the  printer (a pipe) when the
               application switches the printer offline with a Media Copy com‐
               mand.  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
               a  blank  string.   If  the  resource value is given as a blank
               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 the portion within the scrolling mar‐
               gins (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.”

       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.”

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

       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 R4.  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 XtCRetryInputMethod)
               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.”

       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 64.

       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 wid‐
               get 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 automat‐
               ically 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.

       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 “false.”

       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.”

       tekGeometry (class Geometry)
               Specifies the preferred size and position of the Tektronix win‐
               dow.  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  pro‐
               cessing  the ti termcap entry, 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.  The default for this resource is “false.”

       titeInhibit (class TiteInhibit)
               Specifies 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.   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.  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 (overrides utf8Titles
                    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 underlin‐
               ing when color is being used for the underline attribute.   The
               default is “true.”

       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 is an  integer,  expected  to  range
               from 0 to 3:

               0  UTF-8  mode  is  initially off.  The command-line option +u8
                  sets the resource to this value.  Escape sequences for turn‐
                  ing UTF-8 mode on/off are allowed.

               1  UTF-8  mode  is  initially on.  Escape sequences for turning
                  UTF-8 mode on/off are allowed.

               2  The command-line option -u8 sets the resource to this value.
                  Escape sequences for turning UTF-8 mode on/off are ignored.

               3  This  is  the  default value of the resource.  It is changed
                  during  initialization  depending  on  whether  the   locale
                  resource  was  set,  to 0 or 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.

       utf8Latin1 (class Utf8Latin1)
               If true, allow an ISO-8859-1 normal font to be combined with an
               ISO-10646 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, which does not override any‐
               thing.

       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.  Set this resource to  “true”  to  allow  UTF-8  encoded
               title strings.  That cancels the translation to UTF-8, allowing
               UTF-8 strings to be displayed as is.

               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  the  control sequences document), to set an
               equivalent flag.  The titleModes resource sets the same  value,
               which overrides this resource.

               The default is “false.”

       veryBoldColors (class VeryBoldColors)
               Specifies whether to combine video attributes with colors spec‐
               ified by colorBD, colorBL, colorRV and colorUL.   The  resource
               value is the sum of values for each attribute:
                 1 for reverse,
                 2 for underline,
                 4 for bold and
                 8 for blink.

               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.”

       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.

       vt100Graphics (class VT100Graphics)
               This specifies whether xterm will interpret VT100 graphic char‐
               acter  escape  sequences  while  in UTF-8 mode.  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 dou‐
               ble-width font is found, it will improvise, by  stretching  the
               normal font.

       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 sta‐
               tus report.  The possibilities are “none,” which sends no  ter‐
               minating  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.

       The 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 (class SmeBSB)
               This entry invokes the print() action.

       print-redir (class SmeBSB)
               This entry invokes the print-redir() 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 old-function-keys(toggle) action.

       hpFunctionKeys (class SmeBSB)
               This entry invokes the hp-function-keys(toggle) action.

       scoFunctionKeys (class SmeBSB)
               This entry invokes the sco-function-keys(toggle) action.

       sunFunctionKeys (class SmeBSB)
               This entry invokes the 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 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.

       visualbell (class SmeBSB)
               This entry invokes the set-visualbell(toggle) action.

       bellIsUrgent (class SmeBSB)
               This entry invokes the set-bellIsUrgent(toggle) action.

       poponbell (class SmeBSB)
               This entry invokes the set-poponbell(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.

       The fontMenu has the following entries:

       fontdefault (class SmeBSB)
               This entry invokes the set-vt-font(d) action.

       font1 (class SmeBSB)
               This entry invokes the set-vt-font(1) action.

       font2 (class SmeBSB)
               This entry invokes the set-vt-font(2) action.

       font3 (class SmeBSB)
               This entry invokes the set-vt-font(3) action.

       font4 (class SmeBSB)
               This entry invokes the set-vt-font(4) action.

       font5 (class SmeBSB)
               This entry invokes the set-vt-font(5) action.

       font6 (class SmeBSB)
               This entry invokes the set-vt-font(6) action.

       fontescape (class SmeBSB)
               This entry invokes the set-vt-font(e) action.

       fontsel (class SmeBSB)
               This entry invokes the set-vt-font(s) 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-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.

       The 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:

       thickness (class Thickness)
               Specifies the width in pixels of the scrollbar.

       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.
               The  “thumb”  of the scrollbar is a simple checkerboard pattern
               alternating pixels for foreground and background color.

POINTER USAGE
       Once the VT102 window is created, xterm allows you to select  text  and
       copy it within the same or other windows.

   SELECTION
       The  selection  functions are invoked when the pointer buttons are used
       with no modifiers, and when they are used with the  “shift”  key.   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.   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 PRIMARY selection when the button is
       released.  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/but‐
       ton 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
       PRIMARY  selection, if any, otherwise from the cut buffer, inserting it
       as keyboard input.

       Pointer button three (usually right)  extends  the  current  selection.
       (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  com‐
       mand  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 VT102 window, the Tektronix window does not allow the  copy‐
       ing  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 server.

   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.

       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 (see resource selectToClipboard),
       the problem with persistence  of  ownership  is  bypassed.   Otherwise,
       there  is  no  difference  regarding  the  data which can be passed via
       selection.

   SELECTION TARGETS
       The different types of data which are passed depend on what the receiv‐
       ing 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-charac‐
                   ter support, it both accepts and provides this type.

              TEXT the text is in the encoding which corresponds to your  cur‐
                   rent 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 config‐
       ured 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 spe‐
       cific 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

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 VT102 and Tektronix windows.  There are several sections:

       Commands for managing X events:

              Toolbar
                     Clicking on the "Toolbar" menu entry hides the toolbar if
                     it is visible, and shows it if it is not.

              Secure Keyboard (securekbd)
                     The  Secure Keyboard mode is helpful when typing in pass‐
                     words or other sensitive data in an unsecure environment;
                     see SECURITY below (but read the limitations carefully).

              Allow SendEvents (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 (redraw)
                     Forces the X display to repaint; useful in some  environ‐
                     ments.

       Commands for capturing output:

              Log to File (logging)
                     Captures  text sent to the screen in a logfile, as in the
                     -l logging option.

              Print Window (print)
                     Sends the text of the current window to the program given
                     in the printerCommand resource.

              Redirect to Printer (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.

       Modes for setting keyboard style:

              8-Bit Controls (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 the document  Xterm  Control
                     Sequences).   This  corresponds  to  the  eightBitControl
                     resource.

              Backarrow Key (BS/DEL) (backarrow key)
                     Modifies the behavior of the  backarrow  key,  making  it
                     transmit  either  a backspace (8) or delete (127) charac‐
                     ter.  This corresponds to the backarrowKey resource.

              Alt/NumLock Modifiers (num-lock)
                     Controls the treatment of Alt- and NumLock-key modifiers.
                     This corresponds to the numLock resource.

              Meta Sends Escape (meta-esc)
                     Controls whether Meta keys are converted into a two-char‐
                     acter sequence with the character itself preceded by ESC.
                     This corresponds to the metaSendsEscape resource.

              Delete is DEL (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 (oldFunctionKeys)

              HP Function-Keys (hpFunctionKeys)

              SCO Function-Keys (scoFunctionKeys)

              Sun Function-Keys (sunFunctionKeys)

              VT220 Keyboard (sunKeyboard)
                     These  act as a radio-button, selecting one style for the
                     keyboard  layout.   It  corresponds  to  more  than   one
                     resource  setting: sunKeyboard, sunFunctionKeys, scoFunc‐
                     tionKeys and hpFunctionKeys ."

       Commands for process signalling:

              Send STOP Signal (suspend)

              Send CONT Signal (continue)

              Send INT Signal (interrupt)

              Send HUP Signal (hangup)

              Send TERM Signal (terminate)

              Send KILL Signal (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 (quit)
                     Stop processing X events  except  to  support  the  -hold
                     option,  and then send a SIGHUP signal to the the process
                     group of the process running  under  xterm  (usually  the
                     shell).

   VT Options
       The  vtMenu sets various modes in the VT102 emulation, and is popped up
       when the “control” key and pointer button two are pressed in the  VT102
       window.

       VT102/VT220 Modes:

              Enable Scrollbar (scrollbar)
                     Enable  (or  disable) the scrollbar.  This corresponds to
                     the -sb option and the scrollBar resource.

              Enable Jump Scroll (jumpscroll)
                     Enable (or disable) jump scrolling.  This corresponds  to
                     the -j option and the jumpScroll resource.

              Enable Reverse Video (reversevideo)
                     Enable  (or  disable) reverse-video.  This corresponds to
                     the -rv option and the reverseVideo resource.

              Enable Auto Wraparound (autowrap)
                     Enable (or disable) auto-wraparound.  This corresponds to
                     the -aw option and the autoWrap resource.

              Enable Reverse Wraparound (reversewrap)
                     Enable (or disable) reverse wraparound.  This corresponds
                     to the -rw option and the reverseWrap resource.

              Enable Auto Linefeed (autolinefeed)
                     Enable (or disable) auto-linefeed.  This is the VT102 NEL
                     function,  which  causes  the emulator to emit a linefeed
                     after each carriage return.  There  is  no  corresponding
                     command-line option or resource setting.

              Enable Application Cursor Keys (appcursor)
                     Enable (or disable) application cursor keys.  This corre‐
                     sponds to the appcursorDefault  resource.   There  is  no
                     corresponding command-line option.

              Enable Application Keypad (appkeypad)
                     Enable (or disable) application keypad keys.  This corre‐
                     sponds to the appkeypadDefault  resource.   There  is  no
                     corresponding command-line option.

              Scroll to Bottom on Key Press (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.

              Scroll to Bottom on Tty Output (scrollttyoutput)
                     Enable  (or  disable)  scrolling  to  the  bottom  of the
                     scrolling region on output to the terminal.  This  corre‐
                     sponds   to   the  -si  option  and  the  scrollTtyOutput
                     resource.

              Allow 80/132 Column Switching (allow132)
                     Enable (or disable) switching between 80 and 132 columns.
                     This   corresponds  to  the  -132  option  and  the  c132
                     resource.

              Keep Selection (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, it can provide the corresponding text to other
                     clients  via  cut/paste.  This corresponds to the keepSe‐
                     lection resource.  There is no corresponding command-line
                     option.

              Select to Clipboard (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.

              Enable Visual Bell (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 (bellIsUrgent)
                     Enable (or disable) Urgency window manager hint when Con‐
                     trol-G is received.  This corresponds to the bellIsUrgent
                     resource.

              Enable Pop on Bell (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 (cursorblink)
                     Enable  (or  disable)  the blinking-cursor feature.  This
                     corresponds  to  the  -bc  option  and  the   cursorBlink
                     resource.  There is also an escape sequence (see the doc‐
                     ument Xterm Control Sequences).  The menu entry  and  the
                     escape  sequence  states  are XOR'd: if both are enabled,
                     the cursor will not blink, if only one  is  enabled,  the
                     cursor will blink.

              Enable Alternate Screen Switching (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 (activeicon)
                     Enable (or disable) the active-icon feature.  This corre‐
                     sponds to the -ai option and the activeIcon resource.

       VT102/VT220 Commands:

              Do Soft Reset (softreset)
                     Reset scroll regions.  This can be convenient  when  some
                     program  has  left  the  scroll  regions  set incorrectly
                     (often a problem when using VMS or TOPS-20).  This corre‐
                     sponds to the VT220 DECSTR control sequence.

              Do Full Reset (hardreset)
                     The full reset entry will clear the screen, reset tabs to
                     every eight columns, and reset the terminal  modes  (such
                     as  wrap  and smooth scroll) to their initial states just
                     after xterm has  finished  processing  the  command  line
                     options.   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.

              Reset and Clear Saved Lines (clearsavedlines)
                     Perform a full reset, and also clear the saved lines.

       Commands for setting the current screen:

              Show Tek Window (tekshow)
                     When enabled, pops the Tektronix 4014 window up (makes it
                     visible).   When  disabled, hides the Tektronix 4014 win‐
                     dow.

              Switch to Tek Mode (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 (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 (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  fontMenu  pops  up  when when the “control” key and pointer button
       three are pressed in a window.  It sets the font used in the VT102 win‐
       dow, 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  alterna‐
       tives:

              Default (fontdefault)
                     Set  the  font  to  the  default, i.e., that given by the
                     *VT100.font resource.

              Unreadable (font1)
                     Set the font to that given by the *VT100.font1 resource.

              Tiny (font2)
                     Set the font to that given by the *VT100.font2 resource.

              Small (font3)
                     Set the font to that given by the *VT100.font3 resource.

              Medium (font4)
                     Set the font to that given by the *VT100.font4 resource.

              Large (font5)
                     Set the font to that given by the *VT100.font5 resource.

              Huge (font6)
                     Set the font to that given by the *VT100.font6 resource.

              Escape Sequence
                     This allows you to set the font last specified by the Set
                     Font  escape  sequence  (see  the  document Xterm Control
                     Sequences).

              Selection (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:

              Line-Drawing Characters (font-linedrawing)
                     When set, tells xterm to draw its own line-drawing  char‐
                     acters.   Otherwise  it  relies  on  the  font containing
                     these.  Compare to the forceBoxChars resource.

              Packed Font (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 (font-doublesize)
                     When set, xterm may ask the font server to produce scaled
                     versions of the normal font, for VT102 double-size  char‐
                     acters.

       The third section allows you to modify the way it is specified:

              TrueType Fonts (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 (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.

       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 (allow-font-ops)
                     This corresponds to the allowColorOps  resource.   Enable
                     or disable control sequences that set/query the colors.

              Allow Font Ops (allow-font-ops)
                     This corresponds to the allowFontOps resource.  Enable or
                     disable control sequences that set/query the font.

              Allow Tcap Ops (allow-tcap-ops)
                     Enable or disable control sequences that query the termi‐
                     nal's  notion  of its function-key strings, as termcap or
                     terminfo capabilities.  This corresponds to  the  allowT‐
                     capOps resource.

              Allow Title Ops (allow-title-ops)
                     Enable  or disable control sequences that modify the win‐
                     dow title or icon name.  This corresponds to the allowTi‐
                     tleOps resource.

              Allow Window Ops (allow-window-ops)
                     Enable  or  disable extended window control sequences (as
                     used in dtterm).  This corresponds to the  allowWindowOps
                     resource.

   TEK Options
       The  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 (tektextlarge)

              #2 Size Characters (tektext2)

              #3 Size Characters (tektext3)

              Small Characters (tektextsmall)

       Commands:

              PAGE (tekpage)
                     Clear the Tektronix window.

              RESET (tekreset)

              COPY (tekcopy)

       Windows:

              Show VT Window (vtshow)

              Switch to VT Mode (vtmode)

              Hide Tek Window (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  ser‐
       vices  of  the X protocol to snoop on your activities, potentially cap‐
       turing 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  allowSendE‐
       vents  provides  some  protection  against rogue applications tampering
       with your programs, guarding against a snooper is harder.

       The possibility of an application spying on your keystrokes is of  par‐
       ticular  concern when you want to type in a password or other sensitive
       data.  The best solution to this problem is to use a better  authoriza‐
       tion  mechanism  than  is provided by X.  Given 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 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  dis‐
       plays  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 win‐
       dow 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 fore‐
       ground 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 of 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, although 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 bytes 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.

ACTIONS
       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 unpre‐
       dictable behavior.  The following actions are provided for  use  within
       the vt100 or tek4014 translations resources:

       allow-color-ops(on/off/toggle)
               This  action  set  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 set or toggles the  allowFontOps  resource  and  is
               also invoked by the allow-font-ops entry in fontMenu.

       allow-send-events(on/off/toggle)
               This  action set or toggles the allowSendEvents resource and is
               also invoked by the allowsends entry in mainMenu.

       allow-tcap-ops(on/off/toggle)
               This action set 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  set  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 set 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 eightBitInput 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() (see below) 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.

       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
               beep().  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 fea‐
               ture 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  /: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  echo‐
               ing  the  event's position (i.e., character line and column) in
               the following format:

                       ^X ESC G  

       iconify()
               Iconifies the window.

       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.

       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  charac‐
               ter  or  string associated with the key that was pressed.  This
               only applies to single-byte values.  The exact  action  depends
               on  the  value  of  the  metaSendsEscape  and the eightBitInput
               resources.  The metaSendsEscape resource is tested first.

               The term "eight-bit" is misleading: xterm checks if  the  key's
               value  is  less  than 128.  If so, xterm adds 128 to the value,
               setting its eighth bit.  Otherwise  xterm  sends  an  ESC  byte
               before  the key.  In other applications' documentation, that is
               referred to as a "meta key".

       insert-selection(sourcename [, ...])
               This action inserts the string found in the selection  or  cut‐
               buffer  indicated  by  sourcename.   Sources are checked in the
               order given (case is significant) until  one  is  found.   Com‐
               monly-used  selections  include:  PRIMARY, SECONDARY, and CLIP‐
               BOARD.  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 (case is  signifi‐
               cant).  The name None restores the original translation table.

       larger-vt-font()
               Set  the  font to the next larger one, based on the font dimen‐
               sions.  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: 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.

       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 and is also invoked by the print
               entry in mainMenu.

               The action accepts optional parameters, which temporarily over‐
               ride  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 new‐
                    line)  to  the  screen  width  (i.e.,  printerNewLine   is
                    ``true'').

               noAttrs
                    the  page  is  printed  without attributes (i.e., printAt‐
                    tributes 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 printerCom‐
               mand 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-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.

       redraw()
               This action redraws the window  and  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  visi‐
               ble.

               The  count argument indicates the number of units (which may be
               page, halfpage, pixel, or line) by which to scroll.

               An adjustment can be specified for these values by appending  a
               "+" or "-" sign followed by a number, e.g., page-2 to specify 2
               lines less than a page.

               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.

       secure()
               This action toggles the Secure Keyboard mode described  in  the
               section named 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.

       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 selec‐
               tion, without affecting the selection mode.

       select-start()
               This action begins text selection at the current pointer  loca‐
               tion.  See the section on POINTER USAGE for information on mak‐
               ing selections.

       send-signal(signame)
               This action sends the signal named by signame to the xterm sub‐
               process  (the  shell  or  program specified with the -e command
               line option) and 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-allow132(on/off/toggle)
               This  action toggles the c132 resource and is also invoked from
               the allow132 entry in vtMenu.

       set-altscreen(on/off/toggle)
               This action toggles between the alternate and current screens.

       set-appcursor(on/off/toggle)
               This action toggles the handling Application  Cursor  Key  mode
               and is also invoked by the appcursor entry in vtMenu.

       set-appkeypad(on/off/toggle)
               This action toggles the handling of Application Keypad mode and
               is also invoked by the appkeypad entry in vtMenu.

       set-autolinefeed(on/off/toggle)
               This action toggles automatic insertion  of  linefeeds  and  is
               also invoked by the autolinefeed entry in vtMenu.

       set-autowrap(on/off/toggle)
               This  action  toggles  automatic  wrapping of long lines and is
               also invoked by the autowrap entry in vtMenu.

       set-backarrow(on/off/toggle)
               This action toggles  the  backarrowKey  resource  and  is  also
               invoked from the backarrow key entry in vtMenu.

       set-bellIsUrgent(on/off/toggle)
               This  action  toggles  the  bellIsUrgent  resource  and is also
               invoked by the bellIsUrgent entry in vtMenu.

       set-cursorblink(on/off/toggle)
               This action  toggles  the  cursorBlink  resource  and  is  also
               invoked from the cursorblink entry in vtMenu.

       set-cursesemul(on/off/toggle)
               This  action  toggles  the  curses resource and is also invoked
               from the cursesemul entry in vtMenu.

       set-font-doublesize(on/off/toggle)
               This action toggles the fontDoublesize  resource  and  is  also
               invoked by the font-doublesize entry in fontMenu.

       set-hp-function-keys(on/off/toggle)
               This  action  toggles  the  hpFunctionKeys resource and is also
               invoked by the hpFunctionKeys entry in mainMenu.

       set-jumpscroll(on/off/toggle)
               This action toggles the jumpscroll resource and is also invoked
               by the jumpscroll entry in vtMenu.

       set-font-linedrawing(on/off/toggle)
               This  action  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 toggles the forcePackedFont's resource  which  con‐
               trols  to use the font's minimum or maximum glyph width.  It is
               also invoked by the font-packed entry in fontMenu.

       set-keep-selection(on/off/toggle)
               This action toggles the  keepSelection  resource  and  is  also
               invoked by the keepSelection entry in vtMenu.

       set-logging()
               This action toggles the state of the logging option.

       set-old-function-keys(on/off/toggle)
               This  action  toggles  the state of legacy function keys and is
               also invoked by the oldFunctionKeys entry in mainMenu.

       set-marginbell(on/off/toggle)
               This action toggles the marginBell resource.

       set-num-lock()
               This action toggles the state of the numLock resource.

       set-pop-on-bell(on/off/toggle)
               This action toggles the popOnBell resource and is also  invoked
               by the poponbell entry in vtMenu.

       set-render-font(on/off/toggle)
               This action toggles the renderFont resource and is also invoked
               by the render-font entry in fontMenu.

       set-reverse-video(on/off/toggle)
               This action toggles  the  reverseVideo  resource  and  is  also
               invoked by the reversevideo entry in vtMenu.

       set-reversewrap(on/off/toggle)
               This  action  toggles  the  reverseWrap  resource  and  is also
               invoked by the reversewrap entry in vtMenu.

       set-scroll-on-key(on/off/toggle)
               This action toggles the scrollKey resource and is also  invoked
               from the scrollkey entry in vtMenu.

       set-scroll-on-tty-output(on/off/toggle)
               This  action  toggles  the scrollTtyOutput resource and is also
               invoked from the scrollttyoutput entry in vtMenu.

       set-scrollbar(on/off/toggle)
               This action toggles the scrollbar resource and is also  invoked
               by the scrollbar entry in vtMenu.

       set-select(on/off/toggle)
               This  action toggles the selectToClipboard resource and is also
               invoked by the selectToClipboard entry in vtMenu.

       set-sco-function-keys(on/off/toggle)
               This action toggles the scoFunctionKeys resource  and  is  also
               invoked by the scoFunctionKeys entry in mainMenu.

       set-sun-function-keys(on/off/toggle)
               This  action  toggles  the sunFunctionKeys resource and is also
               invoked by the sunFunctionKeys entry in mainMenu.

       set-sun-keyboard(on/off/toggle)
               This action  toggles  the  sunKeyboard  resource  and  is  also
               invoked by the sunKeyboard entry in mainMenu.

       set-tek-text(large/2/3/small)
               This action sets font used in the Tektronix window to the value
               of the resources tektextlarge,  tektext2,  tektext3,  and  tek‐
               textsmall according to the argument.  It is also invoked by the
               entries of the same names as the resources in tekMenu.

       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 tek‐
               mode entry in vtMenu and the vtmode entry in tekMenu.

       set-titeInhibit(on/off/toggle)
               This action toggles the titeInhibit  resource,  which  controls
               switching between the alternate and current screens.

       set-toolbar(on/off/toggle)
               This  action toggles the toolbar feature and is also invoked by
               the toolbar entry in mainMenu.

       set-utf8-mode(on/off/toggle)
               This action toggles the utf8 resource and is  also  invoked  by
               the utf8-mode entry in fontMenu.

       set-utf8-title(on/off/toggle)
               This  action toggles the utf8Title resource and is also invoked
               by the utf8-title entry in fontMenu.

       set-visibility(vt/tek,on/off/toggle)
               This action controls 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  tek‐
               Menu.

       set-visual-bell(on/off/toggle)
               This action toggles the visualBell resource and is also invoked
               by the visualbell entry in vtMenu.

       set-vt-font(d/1/2/3/4/5/6/e/s [,normalfont [, boldfont]])
               This action sets the font or fonts currently being used in  the
               VT102  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  6 indicate the fonts specified by the font1 through
                      font6 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 addi‐
               tional two optional parameters are recognized for the  e  argu‐
               ment: wide font and wide bold font.

       smaller-vt-font()
               Set  the font to the next smaller one, based on the font dimen‐
               sions.  See also set-vt-font().

       soft-reset()
               This action resets the scrolling region  and  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-extend()
               This  action  is similar to select-start except that the selec‐
               tion is extended to the current pointer location.

       start-cursor-extend()
               This action is similar to select-extend except that the  selec‐
               tion is extended to the current text cursor position.

       string(string)
               This action inserts the specified text string as if it had been
               typed.  Quotation is necessary if the  string  contains  white‐
               space  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 cur‐
               rent window contents to a file in the current directory  begin‐
               ning  with  the name COPY.  It is also invoked from the tekcopy
               entry in tekMenu.

       tek-page()
               This action clears the Tektronix window and is also invoked  by
               the tekpage entry in tekMenu.

       tek-reset()
               This  action resets the Tektronix window and is also invoked by
               the tekreset entry in tekMenu.

       vi-button()
               Handles a button event (other than press and release) by  echo‐
               ing 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.

       The default bindings in the VT102 window use the SELECT token, which is
       set by the selectToClipboard resource:

                     Shift  Prior:scroll-back(1,halfpage) \n\
                      Shift  Next:scroll-forw(1,halfpage) \n\
                    Shift  Select:select-cursor-start() \
                                            select-cursor-end(SELECT, CUT_BUFFER0) \n\
                    Shift  Insert:insert-selection(SELECT, CUT_BUFFER0) \n\
                        XF86Paste:insert-selection(SELECT, CUT_BUFFER0) \n\
                         SunPaste:insert-selection(SELECT, CUT_BUFFER0) \n\
               Shift~Ctrl  KP_Add:larger-vt-font() \n\
               Shift Ctrl  KP_Add:smaller-vt-font() \n\
               Shift  KP_Subtract:smaller-vt-font() \n\
                           ~Meta :insert-seven-bit() \n\
                            Meta :insert-eight-bit() \n\
                           !Ctrl :popup-menu(mainMenu) \n\
                      !Lock Ctrl :popup-menu(mainMenu) \n\
            !Lock Ctrl @Num_Lock :popup-menu(mainMenu) \n\
                ! @Num_Lock Ctrl :popup-menu(mainMenu) \n\
                           ~Meta :select-start() \n\
                         ~Meta :select-extend() \n\
                           !Ctrl :popup-menu(vtMenu) \n\
                      !Lock Ctrl :popup-menu(vtMenu) \n\
            !Lock Ctrl @Num_Lock :popup-menu(vtMenu) \n\
                ! @Num_Lock Ctrl :popup-menu(vtMenu) \n\
                     ~Ctrl ~Meta :ignore() \n\
                            Meta :clear-saved-lines() \n\
                       ~Ctrl ~Meta :insert-selection(SELECT, CUT_BUFFER0) \n\
                           !Ctrl :popup-menu(fontMenu) \n\
                      !Lock Ctrl :popup-menu(fontMenu) \n\
            !Lock Ctrl @Num_Lock :popup-menu(fontMenu) \n\
                ! @Num_Lock Ctrl :popup-menu(fontMenu) \n\
                     ~Ctrl ~Meta :start-extend() \n\
                         ~Meta :select-extend() \n\
                            Ctrl :scroll-back(1,halfpage,m) \n\
                       Lock Ctrl :scroll-back(1,halfpage,m) \n\
             Lock @Num_Lock Ctrl :scroll-back(1,halfpage,m) \n\
                  @Num_Lock Ctrl :scroll-back(1,halfpage,m) \n\
                                 :scroll-back(5,line,m)     \n\
                            Ctrl :scroll-forw(1,halfpage,m) \n\
                       Lock Ctrl :scroll-forw(1,halfpage,m) \n\
             Lock @Num_Lock Ctrl :scroll-forw(1,halfpage,m) \n\
                  @Num_Lock Ctrl :scroll-forw(1,halfpage,m) \n\
                                 :scroll-forw(5,line,m)     \n\
                                    :select-end(SELECT, CUT_BUFFER0) \n\
                                  :ignore()


       The  default  bindings  for  the scrollbar widget are separate from the
       VT100 widget:

                                 : StartScroll(Forward) \n\
                                 : StartScroll(Forward) \n\
                                 : StartScroll(Continuous) MoveThumb() NotifyThumb() \n\
                                 : StartScroll(Backward) \n\
                                 : StartScroll(Backward) \n\
                                 : MoveThumb() NotifyThumb() \n\
                                 :    NotifyScroll(Proportional) EndScroll()


       The default bindings in the Tektronix window are:

                            ~Meta: insert-seven-bit() \n\
                             Meta: insert-eight-bit() \n\
                           !Ctrl : popup-menu(mainMenu) \n\
                      !Lock Ctrl : popup-menu(mainMenu) \n\
            !Lock Ctrl @Num_Lock : popup-menu(mainMenu) \n\
                 !Ctrl @Num_Lock : popup-menu(mainMenu) \n\
                           !Ctrl : popup-menu(tekMenu) \n\
                      !Lock Ctrl : popup-menu(tekMenu) \n\
            !Lock Ctrl @Num_Lock : popup-menu(tekMenu) \n\
                 !Ctrl @Num_Lock : popup-menu(tekMenu) \n\
                      Shift ~Meta: gin-press(L) \n\
                            ~Meta: gin-press(l) \n\
                      Shift ~Meta: gin-press(M) \n\
                            ~Meta: gin-press(m) \n\
                      Shift ~Meta: gin-press(R) \n\
                            ~Meta: gin-press(r)


       Here is an example which uses shifted select/paste to copy to the clip‐
       board,  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 corre‐
       sponding cut buffer.

           *VT100*translations:    #override \n\
               ~Shift~Ctrl: insert-selection(PRIMARY, CUT_BUFFER0) \n\
               Shift~Ctrl:  insert-selection(CLIPBOARD, CUT_BUFFER1) \n\
               ~Shift:       select-end(PRIMARY, CUT_BUFFER0) \n\
               Shift:        select-end(CLIPBOARD, CUT_BUFFER1)


       Below is a sample how of the keymap() action is  used  to  add  special
       keys for entering commonly-typed works:

           *VT100.Translations: #override F13: keymap(dbx)
           *VT100.dbxKeymap.translations: \
                F14: keymap(None) \n\
                F17: string("next") string(0x0d) \n\
                F18: string("step") string(0x0d) \n\
                F19: string("continue") string(0x0d) \n\
                F20: string("print ") insert-selection(PRIMARY, CUT_BUFFER0)


       Some  people  prefer  using  the  left  pointer button for dragging the
       scrollbar thumb.  That  can  be  setup  by  altering  the  translations
       resource, e.g.,

           *VT100.scrollbar.translations:#override \n\
                :StartScroll(Forward) \n\
                :StartScroll(Continuous) MoveThumb() NotifyThumb() \n\
                :StartScroll(Backward) \n\
                :MoveThumb() NotifyThumb() \n\
                :  NotifyScroll(Proportional) EndScroll()


CONTROL SEQUENCES AND KEYBOARD
       The  Xterm Control Sequences document 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 Tek‐
       tronix terminals, or from more widely used standards such as ISO-6429.

ENVIRONMENT
       Xterm sets several environment variables:

       DISPLAY
            is the display name, pointing to the X server (see  DISPLAY  NAMES
            in X(7)).

       TERM is  set  according  to the termcap (or terminfo) entry which it is
            using as a reference.

       WINDOWID
            is set to the X window id number of the xterm window.

       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 necessar‐
            ily 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).

       Depending  on your system configuration, xterm may also set the follow‐
       ing:

       COLUMNS
            the width of the xterm in characters (cf: "stty columns").

       HOME when xterm is configured to update utmp.

       LINES
            the height of the xterm in characters (cf: "stty rows").

       LOGNAME
            when xterm is configured to update utmp.

       SHELL
            when xterm is configured to update utmp.  It is also  set  if  you
            provide the shell name as the optional parameter.

       TERMCAP
            the  contents  of  the  termcap entry corresponding to $TERM, with
            lines and columns values substituted for the  actual  size  window
            you have created.

       TERMINFO
            may be defined to a nonstandard location in the configure script.

FILES
       The actual pathnames given may differ on your system.

       /var/run/utmp
            the system logfile, which records user logins.

       /var/log/wtmp
            the system logfile, 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.

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    is  used  for  miscellaneous errors, usually accompanied by a spe‐
            cific 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

       48   ERROR_SPREALLOC
            spawn: realloc of ttydev failed

       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

       90   ERROR_SCALLOC
            Alloc: calloc() failed on base

       91   ERROR_SCALLOC2
            Alloc: calloc() failed on rows

       102  ERROR_SAVE_PTR
            ScrnPointers: malloc/realloc() failed

       121  ERROR_MMALLOC
            my_memmove: 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.

       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.

SEE ALSO
       resize(1), luit(1), X(7), pty(4), tty(4)
       Xterm Control Sequences (this is the file ctlseqs.ms).

       http://invisible-island.net/xterm/xterm.html
       http://invisible-island.net/xterm/ctlseqs/ctlseqs.html

AUTHORS
       Far too many people, including:

       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),  Jason
       Bacon,  Stephen P. Wall, David Wexelblat, and Thomas Dickey (invisible-
       island.net).



                                X Window System                       XTERM(1)