Tracking changes is a useful tool to keep record of your formatting and content edits in a document; in short, it allows you to track your changes. To enable change tracking, first click on the Review tab at the top of your screen. From there, find the "Display for Review" dropdown menu and select All markup.
After you've enabled markup, click the "Show Markup" dropdown menu and click Balloons, then select "Show Revisions in Balloons."
When your revisions are shown as balloons, they look just like comments and can be resolved or replied to.
Finally, click the large icon for Track Changes (above the dropdown menu) to confirm all of your changes and begin seeing every edit made. If you're making a change you don't want to track, click the icon so it's not grayed out, make your changes, then click it again to turn it gray.
