The X Window System User's Guide orients the new user to window system concepts and provides detailed tutorials for many client programs, including the xterm terminal emulator and window managers. Building on this basic knowledge, later chapters explain how to customize the X environment and provide sample configurations. This popular manual is available in two editions, one for users of the MIT software, one for users of Motif. The Standard Edition uses the twm manager in most examples and illustrations. Revised and updated for X11 Release 5. Contents include: Starting the system and opening windows. Using the xterm terminal emulator and window managers. Most standard release clients, including programs for graphics, printing, font manipulation, window/display information, removing windows, as well as several "desktop" utilities. Customizing the window manager, keyboard, display, and certain basic features of any client program. Using and customizing the mwm window manager, for those using the OSF/Motif graphical user interface. System administration tasks, including managing fonts, starting X automatically, and using the display manager, xdm , to run X on a single or multiple display.