LogicGUI really needs an undo command. Because of all the grouping and the complicated layouts that can be created, it is very easy to majorly screw something up by accidentally resizing or moving a bunch of gadgets. An undo feature would really be nice.
I just finished the undo type. You will be able to undo / redo all gadget related steps in a session! As this undo now monitors all events (and i have a lot of them) i would much appreciate to have this more tested before release. If someone has some spare time to do so, please post.