How to Undo/Redo an Action Tap the "Tool" at bottom-right, the menu will pop up. Undo: Tap on the arrow pointing to the left to undo. Redo: Tap on the arrow pointing to the right to redo. Have more questions? Submit a request 1 Comments Date Votes 0 Dave Dyas September 08, 2018 11:58 Using iPad and don’t see a “tool” Please sign in to leave a comment.