Source : Free On-Line Dictionary of Computing

HP-UX
     
         The version of {Unix} running on
        {Hewlett-Packard} {workstations}.
     
        HP-UX conforms to {X/Open}'s Portability Guide Issue 4
        ({XPG4}), Federal Information Processing Specification (FIPS)
        151.1, {POSIX} 1003.1, POSIX 1003.2, {AT&T}'s System V
        Interface Definition 2 ({SVID} 2).  HP-UX incorporates
        selected features from the University of California at
        Berkeley Software Distribution 4.3 ({4.3BSD}).
     
        It is known by some as "{HP-SUX}".
     
        [Features?]
     
        (1997-05-12)