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X Window System
A window system allows a user to run several tasks at the same time and to view and control each of these tasks from a separate window. Silicon Graphics implements the X Window System, a hardware- and operating system-independent windowing system. The X Window System is a portable, network-based windowing system whose portability allows you to create applications that can run on many different workstations. You can compile and execute portable X application code in IRIX without modification.
The Silicon Graphics native X Window System is based on the X Version 11 Release 6 (X11R6) standard. The IRIX extensions to X include
- support for multiple visuals
- overlay windows
- the Display PostScript extension
- the Shape Extension that supports non-rectangular windows
- the X Input Extension that supports devices other than keyboard and mouse
- the Shared Memory Extension
- simultaneous display on multiple graphics monitors
- support for OpenGL
- PEX Version 5.1 supports 3D graphics
- Xlib and Xt
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- 4Dwm
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