Undo/Redo

By default there are 64 undo steps. For example the counter will reset on the 65th pen stroke. This means that you can undo and redo whilst the counter still has your undo in its history, that is before it has reset.

Using the pen will add to the undo history, as will filling, moving, clearing the layer and drawing a Hermite or Bezier curve (pressing enter whilst in Hermite or Bezier mode).

Saving the drawing will reset the undo history, as will changing or swapping the current layer.

The undo count and maximum amount of undo steps are shown on the right of the application window:

Screenshot of the application window with the undo display highlighted

To undo, press the u key on your keyboard. To redo, press the i key on your keyboard.