Use the Undo pane of the Preferences dialog box (QuarkXPress/Edit menu) to control Multiple Undo options.

• Use the Redo Key drop-down menu to specify which keyboard command invokes the Redo command.
• Use the Maximum History Actions field to specify the number of actions that you can store in your undo history. The undo history can hold as many as 30 actions; the default setting is 20.