10. On the Quick Access Toolbar, click the Undo button to reverse your last editing action. Keyboard Shortcut Press Ctrl+Z to undo the last editing action. The Redo button appears on the Quick Access Toolbar, to the right of Undo. When you point to the Undo or Redo button, the name in the ScreenTip reflects your last editing action—for example, Redo Drag And Drop. 11. On the Quick Access Toolbar, click the Redo button to restore the editing action.