A family of Microsoft word processing software products for creating web, email, and print documents.
Within Word 2007, 'compatibility mode' usually means that the document has been Saved As a .DOC in Word 97/2000/2003 format instead of the regular Word 2007 .DOCX format.
Reverting back should be as easy as Save As: either a Word Document or Word Macro Enabled Document, listed within the Save as type: dropdown.
If you are having trouble with that procedure, try starting Word in Safe Mode. With all instances of Word closed, click Start and type in winword /safe then press enter. Word will start with Microsoft Word (Safe Mode) in the title bar and no document. Click Office button, Open to locate and open your compatible document, then use the Save As command.
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