Source : Free On-Line Dictionary of Computing

WordPerfect
     
        1.  A {word processor} for a wide range
        of computers.  The first version was sold in 1980 for {Data
        General} machines, and by the end of 1993 versions were on
        sale for {MS-DOS}, {Microsoft Windows} and {Macintosh}
        computers.  WordPerfect 6.0 for {Unix} was scheduled for
        introduction in May 1994.
     
        Versions: WordPerfect 6.1 for Windows, WordPerfect 3.1 for
        Macintosh/Power Macintosh, WordPerfect 6.0 for UNIX,
        WordPerfect 6.0 for DOS, WordPerfect 7.0 for {Windows 95}.
     
        [Distinguishing features?]
     
        {Home (http://www.corel.com/products/wordperfect/)}.
     
        2. {WordPerfect Corporation}.
     
        (1995-07-05)