Are there hotkeys to step through the Undo Graph even when this graph is minimized/closed?

[jeff101]

Earlier today I was making screenshots of many previous structures. I could step through them using the Undo Graph, but I didn't want the Undo Graph to appear in the screenshots. It seemed like I had to keep opening and closing the Undo Graph between screenshots. Are there any hotkeys that will advance or retreat one step through the Undo Graph, even when the Undo Graph is minimized or closed? Please advise. Thanks!