I have several favorite Word features, but I think my number one favorite is Tracking Changes. This feature back in Word 2003 helped me switch from being a devoted WordPerfect fan to a Word convert.
When you share editing responsibilities with others, Word makes it so easy to make changes. It is found under Review > Track Changes. As you make changes, you’ll see markup in the document. You can view the document in the original, original with changes, final with changes, or final format. Just remember if you want to send the final copy to someone without the edits, you must accept or reject the changes!
Here is a good 5 minute video showing how to use Track Changes in Word 2010.
Reply back with your favorite Word feature.