in 1985 and a Microsoft Windows version was released in 1989. The three products shared the same Microsoft Word name, the same version numbers but were very different products built on different code bases. Three product lines co-existed: Word 1.0 to Word 5.1a for Macintosh, Word 1.0 to Word 2.0 for Windows and Word 1.0 to Word 5.5 for DOS. Word 1.1 for DOS was released in 1984 and added the Print Merge support, equivalent to the Mail Merge feature in newer Word systems. Word 2.0 for DOS was released in 1985 and featured Extended Graphics Adapter (EGA) support. Word 3.0 for DOS was released in 1986. Word 4.0 for DOS was released in 1987 and added support for revision marks (equivalent to the Track Changes feature in more recent Word versions), search/replace by style and macros stored as key stroke sequences. Word 5.0 for DOS, released in 1989, added support for bookmarks, cross-references and conditions and loops in macros, remaining backwards compatible with Word 3.0 macros. The macro language differed from the WinWord 1.0 WordBasic macro language. Word 5.5 for DOS, released in 1990, significantly changed the user interface, with popup menus and dialog boxes. Even in graphics mode, these Graphical User Interface (GUI) elements got the monospace ASCII art look and feel found in text mode programs like Microsoft QuickBasic. Word 6.0 for DOS, the last Word for DOS version, was released in 1993, at the same time as Word 6.0 for Windows (16-bit) and Word 6.0 for Macintosh. Although Macintosh and Windows versions shared the same code base, the Word for DOS was different. The Word 6.0 for DOS macro language was compatible with the Word 3.x-5.x macro language while Word 6.0 for Windows and Word 6.0 for Macintosh inherited WordBasic from the Word 1.0/2.0 for Windows code base. The DOS and Windows versions of Word 6.0 had different file formats. Word for Windows 1989 to 1995 The first version of Word for Windows was released in November 1989 at a price of USD $498, but was not very popular as Windows users still comprised a minority of the market. The next year, Windows 3.0 debuted, followed shortly afterwards by WinWord 1.1 which was updated for the new OS. The failure of WordPerfect to produce a Windows version proved a fatal mistake. The following year, in 1991, WinWord 2.0 was released which had further improvements and finally