Let's say someone asked you to proofread a worksheet. If you had a hard copy, you might use a red pen to cross out cell data, mark misspellings, or add comments in the margins. However, you could also do all of these things in Excel using the Track Changes and Comments features.
When you've finished reviewing the worksheet, the other person can choose to automatically accept all of your changes, or decide whether to accept or reject each change one by one. In this lesson, you'll learn how to track changes, add comments, and compare two versions of a worksheet. You'll also learn how to prepare a final version for sharing, including how to check spelling.