On the Format menu, click AutoFormat.In the AutoFormat dialog box, click Autoformat and review each change, and then click OK.
Click Review Changes.In the Review AutoFormat Changes dialog box, click the 
Find button or the 
Find button to review changes one by one.
When you have finished reviewing changes, click Cancel to return to the AutoFormat dialog box, where you can accept or reject all changes.
Tip
As you review your document, you can reject a change that Microsoft Word has made. You can also show or hide the revision marks Word uses to show tracked changes.