DESCRIPTION

X Window System servers run on computers with bitmap displays. The server distributes user input to and accepts output requests from various client programs through a variety of different interprocess communication channels. Although the most common case is for the client programs to be running on the same machine as the server, clients can be run transparently from other machines (including machines with different architectures and operating systems) as well.

X supports overlapping hierarchical subwindows and text and graphics operations, on both monochrome and color displays. For a full explanation of the functions that are available, see the Xlib - CLanguageX Interface manual, the XWindow SystemProtocol specification, the XToolkit Intrinsics - C LanguageInterface manual, and various toolkit documents.

The number of programs that use X is quite large. Programs provided in the core MIT distribution include:

a terminal emulator (xterm),
a window manager (twm),
a display manager (xdm),
a console redirect program (xconsole),
mail managing utilities (xmh and xbiff),
a manual page browser (xman), a bitmap editor (bitmap),
a resource editor (editres),
a ditroff previewer (xditview),
access control programs (xauth and xhost),
user preference setting programs (xrdb, xcmsdb, xset, xsetroot, xstdcmap, and xmodmap),
a load monitor (xload),
clocks (xclock and oclock),
a font displayer (xfd),
utilities for listing information about fonts, windows, and displays (xlsfonts, xfontsel, xwininfo, xlsclients, xdpyinfo, and xprop),
a diagnostic for seeing what events are generated and when (xev), screen image manipulation utilities (xwd, xwud, xpr, and xmag),
and various demos (xeyes, ico, xgc, x11perf, etc.). Many other utilities, window managers, games, toolkits, etc. are included as user-contributed software in the MIT distribution, or are available using anonymous ftp on the Internet.

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