Some Historical Background...

• REXX was developed by Mike Cowlishaw of IBM between 1979 and 1982.
• REXX was designed to be an easy-to-read, easy-to-use, personal programming language. As the same time, it was designed not to sacrifice power to ease-of-use.
• REXX is available on numerous platforms:
  
  • VM/CMS (1983)
  • PC/DOS (Personal REXX, 1983)
  • ARexx (Commodore Amiga, 1987)
  • OS/2 (Personal REXX, 1989; IBM implementation on OS/2 1.2, 1990)
  • MVS/TSO (early 1990's)
  
  and REXX implementations have appeared for these platforms:

  • OS/400
  • AIX
  • UNIX
  • Tandem
  • Windows/Windows95/WindowsNT
• The American National Standards Institute (ANSI) issued standard X3.274-1996 in 1996 for Programming Language -- REXX.

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