What Did You Change?

Have you ever received a document from someone and needed to suggest a few changes but were not sure how to highlight the changes for them? In Microsoft Word, you can select the Tools --> Track Changes command (Ctrl+Shift+E). That command works like a toggle. If Track Changes is turned on (Office 2003), you'll see TRK on the status bar at the bottom of the Word window.

Once you've turned on this feature, any changes made to the document are highlighted in a different color (by default red for the first reviewer, blue for the second). So changes you send to others are obvious. Or changes they send to you, if they turn on the Track Revisions feature, are equally obvious.