KCDw has 25 steps of undo. Simply click on the undo menu item, or any of the shortcuts and program will go back to the place you were previous. You can continue to click undo up to 25 times, provided you have already done 25 different steps. If you want to go back to the step you undid, click on redo or any of its shortcuts. You can't redo unless you have previously click undo at least once.
Short Cut Keys:
Undo
Ctrl + Z
Toolbar: Click on
Redo
Ctrl + Y
Toolbar: Click on
