Undoing or Redoing a Tool Action
Click the Undo and Redo tools in the Quick Access toolbar or press Ctrl+Z to undo and Ctrl+Y to redo.
You can undo and redo actions until you have undone or redone every action in your session, or you can jump to a particular action by selecting that action from the Undo and Redo menus. If undoing an action will open or close a document or switch to a new Design window, a confirmation window is displayed.
When you undo a tool action, the view is also changed to the view you used to perform that action.