Redo is the opposite of undo: it redoes an action you have undone. For example, if you decide that you do, after all, want to delete an item that you have just brought back with undo, you can redo the action.
Click the Redo button on the toolbar to redo the last action.
Ctrl + Y.
The last action you undid is redone.
Click the Redo button multiple times to redo multiple actions.