XTERM(1)XTERM(1)NAMExterm - terminal emulator for X
SYNOPSISxterm [-toolkitoption ...] [-option ...]
DESCRIPTION
The xterm program is a terminal emulator for the X Window System. It
provides DEC VT102 and Tektronix 4014 compatible terminals for programs
that can't use the window system directly. If the underlying operating
system supports terminal resizing capabilities (for example, the SIG‐
WINCH signal in systems derived from 4.3bsd), xterm will use the facil‐
ities to notify programs running in the window whenever it is resized.
The VT102 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 ter‐
minal 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 VT102 window, and the ``Tek Options'' menu in the
4014 window.
xterm currently support international input/output in all codesets.
Support for Complex Text Layout scripts is not present.
EMULATIONS
The VT102 emulation is fairly complete, but does not support smooth
scrolling, VT52 mode, the blinking character attribute nor the double-
wide and double-size character sets. termcap (see terminfo(4)) entries
that work with xterm include ``xterm,'' ``vt102,'' ``vt100'' and
``ansi,'' and xterm automatically searches the termcap file in this
order for these entries and then sets the ``TERM'' and the ``TERMCAP''
environment variables.
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 directory xterm is started in, or the home directory for a login
xterm).
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
(see terminfo(4)) entry for xterm allows the visual editor vi(1) to
switch to the alternate screen for editing and to restore the screen on
exit.
In either VT102 or Tektronix mode, there are escape sequences to change
the name of the windows. See Xterm Control Sequences for details.
OPTIONS
The xterm terminal emulator accepts all of the standard X Toolkit com‐
mand line options as well as the following (if the option begins with a
`+' instead of a `-', the option is restored to its default value):
-help This causes xterm to print out a verbose message describing its
options.
-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.
-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. The default is 2.
-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.
-cn This option indicates that newlines should not be cut in line-
mode selections.
+cn This option indicates that newlines should be cut in line-mode
selections.
-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.
-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.
-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.
-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. This option also supports a
FontSet, a comma seperated list of fonts.
-fi This option sets the font for active icons if that feature was
compiled in to xterm.
-im Turn on the useInsertMode resource.
+im Turn off the useInsertMode resource.
-j This option indicates that xterm should do jump scrolling.
Normally, text is scrolled one line at a time; this option
allows xterm to move multiple lines at a time so that it
doesn't fall as far behind. Its use is strongly recommended
since it make xterm much faster when scanning through large
amounts of text. The VT100 escape sequences for enabling and
disabling smooth scroll as well as the ``VT Options'' menu can
be used to turn this feature on or off.
+j This option indicates that xterm should not do jump scrolling.
-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).
+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. This option can
be turned on and off from the ``VT Options'' menu.
+mb This option indicates that margin bell should not be rung.
-mc milliseconds
This option specifies the maximum time between multi-click
selections.
-ms color
This option specifies the color to be used for the pointer cur‐
sor. The default is to use the foreground color.
-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.
-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.
-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 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.
-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.
-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.
-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. The default is 64.
-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.
+t This option indicates that xterm should start in VT102 mode.
-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(1) program. Allowable keywords
include: intr, quit, erase, kill, eof, eol, swtch, start, stop,
brk, susp, dsusp, rprnt, flush, weras, and lnext. Control
characters may be specified as ^char (e.g. ^c or ^u) and ^? may
be used to indicate delete.
-tn name
This option specifies the name of the terminal type to be set
in the TERM environment variable. This terminal type must
exist in the terminfo(4) database and should have li# and co#
entries.
-ut This option indicates that xterm shouldn't write a record into
the the system log file /etc/utmp.
+ut This option indicates that xterm should write a record into the
system log file /etc/utmp.
-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.
-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 show not wait before starting
the subprocess.
-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 specifies the last two letters of the name of a
pseudoterminal to use in slave mode, plus the number of the
inherited file descriptor. The option is parsed ``%c%c%d''.
This allows xterm to be used as an input and output channel for
an existing program and is sometimes used in specialized appli‐
cations.
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.
This option specifies the preferred position of the icon window.
It is shorthand for specifying the ``*iconGeometry'' resource.
-T string
This option specifies the title for xterm's windows. It is
equivalent to -title.
-n string
This option specifies the icon name for xterm's windows. It is
shorthand for specifying the ``*iconName'' resource. Note that
this is not the same as the 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:
-bg color
This option specifies the color to use for the background of
the window. The default is ``white.''
-bd color
This option specifies the color to use for the border of the
window. The default is ``black.''
-bw number
This option specifies the width in pixels of the border sur‐
rounding the window.
-fg color
This option specifies the color to use for displaying text.
The default is ``black.''
-fn font
This option specifies the font to be used for displaying normal
text. The default is fixed. This option can also be used for
specifying a FontSet,a comma seperated list of fonts to be used
in xterm.
-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 ``*''
characters.
-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.
-rv This option indicates that reverse video should be simulated by
swapping the foreground and background colors.
-geometry geometry
This option specifies the preferred size and position of the
VT102 window; see X11(5).
-display display
This option specifies the X server to contact; see X11(5).
-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.
-iconic This option indicates that xterm should ask the window manager
to start it as an icon rather than as the normal window.
RESOURCES
The program understands all of the core X Toolkit resource names and
classes as well as:
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.
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.
ttyModes (class TtyModes)
Specifies a string containing terminal setting keywords and the
characters to which they may be bound. Allowable keywords
include: intr, quit, erase, kill, eof, eol, swtch, start, stop,
brk, susp, dsusp, rprnt, flush, weras, and lnext. Control
characters may be specified as ^char (e.g. ^c or ^u) and ^? may
be used to indicate Delete. This is very useful for overriding
the default terminal settings without having to do an stty
every time an xterm is started.
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.''
utmpInhibit (class UtmpInhibit)
Specifies whether or not xterm should try to record the user's
terminal in /etc/utmp.
sunFunctionKeys (class SunFunctionKeys)
Specifies whether or not Sun Function Key escape codes should
be generated for function keys instead of standard escape
sequences.
waitForMap (class WaitForMap)
Specifies whether or not xterm should wait for the initial win‐
dow map before starting the subprocess. The default is
``false.''
The following resources are specified as part of the vt100 widget
(class VT100):
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.''
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.
alwaysHighlight (class AlwaysHighlight)
Specifies whether or not xterm should always display a high‐
lighted text cursor. By default, a hollow text cursor is dis‐
played whenever the pointer moves out of the window or the win‐
dow loses the input focus.
appcursorDefault (class AppcursorDefault)
If ``true,'' the cursor keys are initially in application 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.
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.
boldFont (class BoldFont)
Specifies the name of the bold font to use instead of over‐
striking.
boldFontSet (class BoldFontSet)
Specifies the name of the bold font set to use instead of over‐
striking. For backwards compatibility, this resource will be
activated only if BoldFont resource is not set.
c132 (class C132)
Specifies whether or not the VT102 DECCOLM escape sequence
should be honored. The default is ``false.''
cutNewline (class CutNewline)
If false, triple clicking to select a line does not include the
Newline at the end of the line. If true, the Newline is
selected. The default is ``true.''
cutToBeginningOfLine (class CutToBeginningOfLine)
If false, triple clicking to select a line selects only from
the current word forward. If true, the entire line is
selected. The default is ``true.''
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 section on specifying character classes.
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.''
background (class Background)
Specifies the color to use for the background of the window.
The default is ``white.''
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 ``black.''
cursorColor (class Foreground)
Specifies the color to use for the text cursor. The default is
``black.''
eightBitInput (class EightBitInput)
If true, Meta characters input from the keyboard are presented
as a single character with the eighth bit turned on. If false,
Meta characters are converted into a two-character sequence
with the character itself preceded by ESC. The default is
``true.''
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.''
font (class Font)
Specifies the name of the normal font. The default is
``fixed.''
fontSet (class FontSet)
Specifies the name of the normal font set. For backward compat‐
ibility, this resource will be activated only if there is no
font resource is set for xterm.
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.
geometry (class Geometry)
Specifies the preferred size and position of the VT102 window.
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.''
iconBorderWidth (class BorderWidth)
Specifies the border width for the active icon window if this
feature is compiled into xterm. The default is 0 (no border).
Not all window managers will make the border visible.
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.
iconFont (class IconFont)
Specifies the font for the miniature active icon window, if
this feature is compiled into xterm. The default is "nil2".
internalBorder (class BorderWidth)
Specifies the number of pixels between the characters and the
window border. The default is 2.
jumpScroll (class JumpScroll)
Specifies whether or not jump scroll should be used. The
default is ``true.''
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 run when the user
types near the right margin. The default is ``false.''
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.
pointerColor (class Foreground)
Specifies the foreground color of the pointer. The default is
``XtDefaultForeground.''
pointerColorBackground (class Background)
Specifies the background color of the pointer. The default is
``XtDefaultBackground.''
pointerShape (class Cursor)
Specifies the name of the shape of the pointer. The default is
``xterm.''
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.
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.
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.''
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.''
scrollKey (class ScrollCond)
Specifies whether or not pressing a key should automatically
cause the scrollbar to go to the bottom of the scrolling
region. 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.
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.
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.''
titeInhibit (class TiteInhibit)
Specifies whether or not xterm should remove 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.
translations (class Translations)
Specifies the key and button bindings for menus, selections,
``programmed strings,'' etc. See ACTIONS below.
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.''
The following resources are specified as part of the tek4014 widget
(class Tek4014):
width (class Width)
Specifies the width of the Tektronix window in pixels.
height (class Height)
Specifies the height of the Tektronix window in pixels.
fontLarge (class Font)
Specifies the large font to use in the Tektronix window.
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.
fontSmall (class Font)
Specifies the small font to use in the Tektronix window.
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.''
ginTerminator (class GinTerminator)
Specifies what character(s) should follow a GIN report or sta‐
tus report. The possibilities are ``none,'' which sends no
terminating characters, ``CRonly,'' which sends CR, and
``CR&EOT,'' which sends both CR and EOT. The default is
``none.''
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.
The mainMenu has the following entries:
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.
line1 (class SmeLine)
This is a separator.
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.
line2 (class SmeLine)
This is a separator.
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.
marginbell (class SmeBSB)
This entry invokes the set-marginbell(toggle) action.
altscreen (class SmeBSB)
This entry is currently disabled.
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 set
to ``True.''
line1 (class SmeLine)
This is a separator.
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.
line2 (class SmeLine)
This is a separator.
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.
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.
The tekMenu has the following entries:
tektextlarge (class SmeBSB)
This entry invokes the set-tek-text(l) 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(s) action.
line1 (class SmeLine)
This is a separator.
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.
line2 (class SmeLine)
This is a separator.
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.
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.
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. 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. If the
key/button bindings specify that an X selection is to be made, xterm
will leave the selected text highlighted for as long as it is the
selection owner.
Pointer button two (usually middle) `types' (pastes) the text from the
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'' every‐
where 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 multi‐
ple-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 the cut buffer is globally
shared among different applications, you should regard it 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.
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.
Unlike the VT102 window, the Tektronix window dows 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
stty(1) for details).
MENUS
Xterm has four menus, named mainMenu, vtMenu, fontMenu, and tekMenu.
Each menu pops up under the correct combinations of key and button
presses. Most menus are divided into two section, separated by a hori‐
zontal line. The top portion contains various 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. The bottom portion of
the menu are command entries; selecting one of these performs the indi‐
cated function.
The xterm menu pops up when the ``control'' key and pointer button one
are pressed in a window. The mainMenu contains items that apply to
both the VT102 and Tektronix windows. The Secure Keyboard mode is be
used when typing in passwords or other sensitive data in an unsecure
environment; see SECURITY below. Notable entries in the command sec‐
tion of the menu are the Continue, Suspend, Interrupt, Hangup, Termi‐
nate and Kill which sends the SIGCONT, SIGTSTP, SIGINT, SIGHUP, SIGTERM
and SIGKILL signals, respectively, to the process group of the process
running under xterm (usually the shell). The Continue function is
especially useful if the user has accidentally typed CTRL-Z, suspending
the process.
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. In the command section of this menu, the soft reset
entry will reset scroll regions. This can be convenient when some pro‐
gram has left the scroll regions set incorrectly (often a problem when
using VMS or TOPS-20). 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.
The fontMenu sets the font used in the VT102 window. In addition to
the default font and a number of alternatives that are set with
resources, the menu offers the font last specified by the Set Font
escape sequence (see the document Xterm Control Sequences) and the cur‐
rent selection as a font name (if the PRIMARY selection is owned).
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. The PAGE entry in the command section clears the
Tektronix window.
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, there
is every possibility that someone can run an application that will use
the basic services of the X protocol to snoop on your activities,
potentially capturing a transcript of everything you type at the key‐
board. This is of particular concern when you want to type in a pass‐
word or other sensitive data. The best solution to this problem is to
use a better authorization mechanism that host-based control, but a
simple mechanism exists for protecting keyboard input in xterm.
The xterm menu (see MENUS above) contains a Secure Keyboard entry
which, when enabled, ensures that all keyboard input is directed only
to xterm (using the GrabKeyboard protocol request). When an applica‐
tion prompts you for a password (or other sensitive data), you can
enable Secure Keyboard using the menu, type in the data, and then dis‐
able Secure Keyboard using the menu again. Only one X client at a time
can secure the keyboard, so when you attempt to enable Secure Keyboard
it may fail. In this case, the bell will sound. If the Secure Key‐
board 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 displays a prompt before
asking for the password, it is safest to enter secure mode before the
prompt gets displayed, and to make sure that the prompt gets displayed
correctly (in the new colors), to minimize the probability of spoofing.
You can also bring up the menu again and make sure that a check mark
appears next to the entry.
Secure Keyboard mode will be disabled automatically if your xterm 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 middle mouse button twice in rapid succession will cause
all characters of the same class (e.g. letters, white space, punctua‐
tion) to be selected. Since different people have different prefer‐
ences 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 127,
corresponding to the ASCII code for the character or characters to be
set. The value is arbitrary, although the default table uses the char‐
acter number of the first character occurring in the set.
The default table is
static int charClass[128] = {
/* 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};
For example, the string ``33:48,37:48,45-47:48,64:48'' 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 for the vt100 or
tek4014 widgets. Changing the translations for events other than key
and button events is not expected, and will cause unpredictable behav‐
ior. The following actions are provided for using within the vt100 or
tek4014 translations resources:
bell([percent])
This action rings the keyboard bell at the specified percentage
above or below the base volume.
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-seven-bit()
This action is a synonym for insert()insert-eight-bit()
This action inserts an eight-bit (Meta) version of the charac‐
ter or string associated with the key that was pressed. The
exact action depends on the value of the eightBitInput
resource.
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.
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.
popup-menu(menuname)
This action displays the specified popup menu. Valid names
(case is significant) include: mainMenu, vtMenu, fontMenu, and
tekMenu.
secure()
This action toggles the Secure Keyboard mode described in the
section named SECURITY, and is invoked from the securekbd entry
in mainMenu.
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.
select-extend()
This action tracks the pointer and extends the selection. It
should only be bound to Motion events.
select-end(destname [, ...])
This action puts the currently selected text into all of the
selections or cutbuffers specified by destname.
select-cursor-start()
This action is similar to select-start except that it begins
the selection at the current text cursor position.
select-cursor-end(destname [, ...])
This action is similar to select-end except that it should be
used with select-cursor-start.
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)) indi‐
cated by the second action argument.
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.
scroll-back(count [,units])
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.
scroll-forw(count [,units])
This action scrolls is similar to scroll-back except that it
scrolls the other direction.
allow-send-events(on/off/toggle)
This action set or toggles the allowSendEvents resource and is
also invoked by the allowsends entry in mainMenu.
redraw()
This action redraws the window and is also invoked by the
redraw entry in mainMenu.
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.
quit() This action sends a SIGHUP to the subprogram and exits. It is
also invoked by the quit entry in mainMenu.
set-scrollbar(on/off/toggle)
This action toggles the scrollbar resource and is also invoked
by the scrollbar entry in vtMenu.
set-jumpscroll(on/off/toggle)
This action toggles the jumpscroll resource and is also invoked
by the jumpscroll entry in vtMenu.
set-reverse-video(on/off/toggle)
This action toggles the reverseVideo resource and is also
invoked by the reversevideo 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-reversewrap(on/off/toggle)
This action toggles the reverseWrap resource and is also
invoked by the reversewrap 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-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-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-allow132(on/off/toggle)
This action toggles the c132 resource and is also invoked from
the allow132 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-visual-bell(on/off/toggle)
This action toggles the visualBell resource and is also invoked
by the visualbell entry in vtMenu.
set-marginbell(on/off/toggle)
This action toggles the marginBell resource and is also invoked
from the marginbell entry in vtMenu.
set-altscreen(on/off/toggle)
This action toggles between the alternate and current screens.
soft-reset()
This action resets the scrolling region and is also invoked
from the softreset entry in vtMenu.
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.
clear-saved-lines()
This action does hard-reset() (see above) and also clears the
history of lines saved off the top of the screen. It is also
invoked from the clearsavedlines entry in vtMenu.
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-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-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 by the entries
of the same names as the resources 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.
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.
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 are:
Shift <KeyPress> Prior:scroll-back(1,halfpage) \n\
Shift <KeyPress> Next:scroll-forw(1,halfpage) \n\
Shift <KeyPress> Select:select-cursor-start() \
select-cursor-end(PRIMARY, CUT_BUFFER0) \n\
Shift <KeyPress> Insert:insert-selection(PRIMARY, CUT_BUFFER0) \n\
~Meta<KeyPress>:insert-seven-bit() \n\
Meta<KeyPress>:insert-eight-bit() \n\
!Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
!Lock Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
!Lock Ctrl @Num_Lock <Btn1Down>:popup-menu(mainMenu) \n\
! @Num_Lock Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
~Meta <Btn1Down>:select-start() \n\
~Meta <Btn1Motion>:select-extend() \n\
!Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
!Lock Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
!Lock Ctrl @Num_Lock <Btn2Down>:popup-menu(vtMenu) \n\
! @Num_Lock Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
~Ctrl ~Meta <Btn2Down>:ignore() \n\
~Ctrl ~Meta <Btn2Up>:insert-selection(PRIMARY, CUT_BUFFER0) \n\
!Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
!Lock Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
!Lock Ctrl @Num_Lock <Btn3Down>:popup-menu(fontMenu) \n\
! @Num_Lock Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
~Ctrl ~Meta <Btn3Down>:start-extend() \n\
~Meta <Btn3Motion>:select-extend() \n\
<BtnUp>:select-end(PRIMARY, CUT_BUFFER0) \n\
<BtnDown>:bell(0)
The default bindings in the Tektronix window are:
~Meta<KeyPress>: insert-seven-bit() \n\
Meta<KeyPress>: insert-eight-bit() \n\
!Ctrl <Btn1Down>: popup-menu(mainMenu) \n\
!Lock Ctrl <Btn1Down>: popup-menu(mainMenu) \n\
!Lock Ctrl @Num_Lock <Btn1Down>:popup-menu(mainMenu) \n\
!Ctrl @Num_Lock <Btn1Down>:popup-menu(mainMenu) \n\
!Ctrl <Btn2Down>: popup-menu(tekMenu) \n\
!Lock Ctrl <Btn2Down>: popup-menu(tekMenu) \n\
!Lock Ctrl @Num_Lock <Btn2Down>:popup-menu(tekMenu) \n\
!Ctrl @Num_Lock <Btn2Down>:popup-menu(tekMenu) \n\
Shift ~Meta<Btn1Down>:gin-press(L) \n\
~Meta<Btn1Down>:gin-press(l) \n\
Shift ~Meta<Btn2Down>:gin-press(M) \n\
~Meta<Btn2Down>:gin-press(m) \n\
Shift ~Meta<Btn3Down>:gin-press(R) \n\
~Meta<Btn3Down>:gin-press(r)
Below is a sample how of the keymap() action is used to add special
keys for entering commonly-typed works:
*VT100.Translations: #override <Key>F13: keymap(dbx)
*VT100.dbxKeymap.translations: \
<Key>F14: keymap(None) \n\
<Key>F17: string("next") string(0x0d) \n\
<Key>F18: string("step") string(0x0d) \n\
<Key>F19: string("continue") string(0x0d) \n\
<Key>F20: string("print ") insert-selection(PRIMARY, CUT_BUFFER0)
ENVIRONMENT
Xterm sets the environment variables ``TERM'' and ``TERMCAP'' properly
for the size window you have created. It also uses and sets the envi‐
ronment variable ``DISPLAY'' to specify which bit map display terminal
to use. The environment variable ``WINDOWID'' is set to the X window
id number of the xterm window.
SEE ALSOresize(1), stty(1), tty(1), tty(7), X11(5)
Xterm Control Sequences
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.
Only fixed-width, character-cell fonts are supported.
This program still needs to be rewritten. It should be split into very
modular sections, with the various emulators being completely separate
widgets that don't know about each other. Ideally, you'd like to be
able to pick and choose emulator widgets and stick them into a single
control widget.
There needs to be a dialog box to allow entry of the Tek COPY file
name.
AUTHORS
Far too many people, 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)
X Version 11 Release 6.4 XTERM(1)
