"Back up" option in an edit menu (4)
I believe the answer is:
undo
(Other definitions for undo that I've seen before include "Unfasten - destroy" , "Take apart" , "Cause the ruin of, or cancel" , "Remove the wrapping" , "Unfasten, loosen" .)
I believe the answer is:
undo
(Other definitions for undo that I've seen before include "Unfasten - destroy" , "Take apart" , "Cause the ruin of, or cancel" , "Remove the wrapping" , "Unfasten, loosen" .)