Subject:   -10- What are the minimum requirements for using IRIS
                Performer?
Date: 8 Apr 1994 00:00:01 EST

  IRIS Performer 1.2/IRIX5 requires IRIX 5.2.  This is the recommended
  configuration for users of IRIS Performer.

  IRIS Performer 1.2/IRIX4 requires IRIX 4.0.5.  Because IRIX 4.0.5F
  added several new Graphics Library (GL) calls to support
  RealityEngine features, any application that uses GL routines or
  tokens found only in 4.0.5F and later, will not run properly under
  4.0.5C and earlier releases.