Quattro Pro is a powerful spreadsheet program that dates back to the 1980s, when it was a rival to market leader Lotus 1-2-3. It's currently part of Corel's WordPerfect Office, bundled with the ...
Microsoft stopped supporting Quattro Pro files starting with Office 2007, and other office applications, such as LibreOffice and Apache OpenOffice, provide only limited support for Quattro Pro's older ...
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