I have problem with Undo feature in Selena. It seems to me that you have changed the behaviour quite a bit. When I do undo, it will undo all lines at once! In 6.0 the undo was per line.
Not only this leads to lots of unexpected errors in my code but also i really need undo per line as was in 6.0.
Could you please implement some checkbox in options to use old behaviour?