Source : Free On-Line Dictionary of Computing

Report Program Generator
     
         (RPG) A system produced by {IBM} in 1965 for easy
        production of sophisticated large system reports.
     
        Versions: RPG II, RPG III, RPG/400 for the IBM {AS/400}.
        {MS-DOS} versions by {California Software} and {Lattice}.
        UNIX version by {Unibol}.  Cross-platform version by {J & C
        Migrations} runs on {MS-DOS}, {Windows}, {AIX}, {HP-UX}, and
        {OS/390}.
     
        See also {CL}, {OCL}.
     
        [Features?]
     
        (1998-12-10)