3. Edit

Contents of the Edit menu

3.1. Undo

This command can be accessed from an image menubar as Edit->Undo action, or by using the keyboard shortcut Ctrl-Z.

"Undo" allows you to revert an image back one step in the drawing or editing process. Almost anything you do to an image can be undone in this way. Further undo operations may be performed according to the number of undo levels configured in the Environment page of the Preferences Dialog. See the section on Undoing for more information about GIMP's very sophisticated "undo" functions.