Create a document for use on previous Word versions
Compatibility Mode ensures that non-Word 2007 users can edit
Work in Compatibility Mode
Although people who use previous versions of Microsoft Office Word and have installed the Microsoft Office Compatibility Pack for 2007 Office Word, Excel and PowerPoint File Formats can open documents that are saved in the Microsoft Office Word 2007 format, they may not be able to change some items that were created by using new or enhanced features.
For example, if you use a previous version of Word to open a document that contains equations, the equations will become images that cannot be edited.
To create a document that will be used in a previous version of Microsoft Office Word, you can work in Compatibility Mode. Compatibility Mode ensures that no new or enhanced features in Office Word 2007 are available while you are working in a document, so that people who are using previous versions of Word will have full editing capabilities.
Turn on Compatibility Mode
When you create a new document that will be used in a previous version, you can turn on Compatibility Mode by saving the file in Word 97-2003 format.