Microsoft Word 97 established the word processing application as a market leader. During an unprecedented period of popularity in personal computers, Microsoft Word quickly found itself in almost all businesses and many homes, establishing itself as the de facto standard for creating written documents. As part of the Office 1997 software package, users were able to use the program to create simple documents and quickly became familiar with the toolbar and menu driven user interface which remained consistent through later releases up to 2003.
The DOC file extension has become so synonymous with word processed files that it is arguably the most widely known file extension. Used for files created by Microsoft Word for DOS through to Word 2003, the format has seen a huge number of improvements but was superseded with the release of Microsoft Word 2007. Many users of Word 2007 continue to use the old DOC format to ensure compatibility with other users from different businesses.
The .wks file extension relates to spreadsheets created by Microsoft Works suite. Microsoft Works provided a less expensive and more simplistic spreadsheet program than Microsoft Excel. Often bundled with new PCs, the suite of products was discontinued in 2008. The file type was particularly unpopular due to a lack of compatability with other programs, including Microsoft Excel.
A .wks file allows rows and columns to be defined in a file within Microsoft Works. Other features commonly found in other spreadsheet applications are also found in .wks files including formulas, charts and graphs. Although Excel 2003 supports .wks files, Excel 2007 does not support them.