I'm in agreement with all of pharosian's sentiments.
Undo should not pertain to pencil marks.
Clear should though, as I originally suggested.
+1 for not thinking there needs to be any discreet handling of highlights in the undo process. It makes more sense the way it is -> just a toggle. Undo already clears a highlight from the corresponding cell anyhow, as it should.
mparisi wrote:
Also, any chance for having an undo without using the keyboard?
I have some thoughts on improving mouse only usage, so I'll create another topic for that.