A few weeks ago Google  launched Suggested Edits in Google Docs–a way to make edits that can be accepted or rejected by the owner of the document.

They know that some of you work with people who still use Word, so starting today any tracked changes in a .docx file will be automatically carried over to Docs as Suggested Edits. Once you’ve imported your changes, you can begin immediately collaborating with your colleagues in real-time.
Release track:
Rapid release and Scheduled release

 

For more information:
Enterprise blog post

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