Thanks, I appreciate it. I’d really like to fix this issue with the line suddenly breaking off when moving, but unfortunately I won’t have any more time to work on it at the end of the month... And I agree that it would be better to undo just a single stroke, but now that I think about it, it would be even better to select the strokes you want to reset with a left-click or something like that. In any case, thanks for the feedback.