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MEX (Multiple EXposure) is a windowing system created by Silicon Graphics, used on 68k-based IRIS systems and early IRIS 4D systems.[1] MEX was originally loaded over a network through the utilization of GL1 routines kept on a remote host machine, usually a VAX. When the IRIS 1400 workstation and GL2-W (IRIX) were introduced, MEX was allowed to run locally. MEX was used in IRIX from the GL2-W2.1.0 release to the 4D1-2.3 release.

With the introduction of 4D1-3.0 (IRIX 3.0), and the complete migration to MIPS processors, support for the GL / GL2 powered MEX ended in the late 1980s, replaced by Sun Microsystems' NeWS and the 4Sight window manager.


  1. ^ Rocky Rhodes, Paul Haeberli, Kipp Hickman, "Mex — A Window Manager for the IRIS", USENIX Conference Proceedings, Summer 1985, pages 381–392.