1XTERM(1)                        X Window System                       XTERM(1)
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NAME

6       xterm - terminal emulator for X
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SYNOPSIS

9       xterm [-toolkitoption ...] [-option ...] [shell]
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DESCRIPTION

12       The xterm program is a terminal emulator for the X Window System.  It
13       provides DEC VT102/VT220 and selected features from higher-level
14       terminals such as VT320/VT420/VT520 (VTxxx).  It also provides
15       Tektronix 4014 emulation for programs that cannot use the window system
16       directly.  If the underlying operating system supports terminal
17       resizing capabilities (for example, the SIGWINCH signal in systems
18       derived from 4.3BSD), xterm will use the facilities to notify programs
19       running in the window whenever it is resized.
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21       The VTxxx and Tektronix 4014 terminals each have their own window so
22       that you can edit text in one and look at graphics in the other at the
23       same time.  To maintain the correct aspect ratio (height/width),
24       Tektronix graphics will be restricted to the largest box with a 4014's
25       aspect ratio that will fit in the window.  This box is located in the
26       upper left area of the window.
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28       Although both windows may be displayed at the same time, one of them is
29       considered the “active” window for receiving keyboard input and
30       terminal output.  This is the window that contains the text cursor.
31       The active window can be chosen through escape sequences, the VT
32       Options menu in the VTxxx window, and the Tek Options menu in the 4014
33       window.
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EMULATIONS

36       Xterm provides usable emulations of related DEC terminals:
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38       ·   VT52 emulation is complete.
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40       ·   VT102 emulation is fairly complete, but does not support autorepeat
41           (because that would affect the keyboard used by other X clients).
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43           Double-size characters are displayed properly if your font server
44           supports scalable fonts.
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46       ·   VT220 emulation does not support soft fonts, it is otherwise
47           complete.
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49       ·   VT420 emulation (the default) supports controls for manipulating
50           rectangles of characters as well as left/right margins.
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52           Xterm does not support some other features which are not suitable
53           for emulation, e.g., two-sessions.
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55       Terminal database (terminfo (5) or termcap (5)) entries that work with
56       xterm include
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58              an optional platform-specific entry (“xterm”),
59              “xterm”,
60              “vt102”,
61              “vt100”,
62              “ansi” and
63              “dumb”
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65       Xterm automatically searches the terminal database in this order for
66       these entries and then sets the “TERM” variable (and the “TERMCAP”
67       environment variable on a few ol