Tom’s Tutorials For Excel: Using Undo For Several Actions at Once

Tom’s Tutorials For Excel: Using Undo For Several Actions at Once
You can Undo up to 100 previous actions on your workbook at the same time. Clicking the drop-down arrow next to the Undo button shows the list of your most recent actions, where you can select the point at which to undo the action(s) you want to reverse. The Redo button, next to the Undo button, restores what you reverse.