__header__
Undo Button
The Undo Button will undo the last (most recent) operation or action
that was made to the image (like drawing a line or entering text).

Click the Undo button from the Viewer Control toolbar to
remove the last (most recent) action from the image.
Each time you click this button, it will remove the last
action from the image until they are all removed.
Note: To undo do all the actions, use the clear button.

__footer__