Use this command to reverse the effects of Undo command. Each Undo
action can be reversed by a single Redo action, until the image returns to its final state;
you can alternate Undo and Redo as much as you please. Note that Redo is only available if the last
action performed was an Undo.
If you alter the image in any way after undoing something, then the state that could otherwise have been reached by redoing is lost,
and there is no way to revert back to it.
Related Topics
Edit menu
Undo