GoBack

When you press SHIFT+F5 (function key) in Microsoft Word, your insertion point will move to the last text that was edited in the document.  Press SHIFT+F5 again and it moves to the section that was edited prior to the last one.  Press SHIFT+F5 again and it moves to the section that was edited prior to the last two.

This feature is called "GoBack" and can be applied to the last 3 edits.