can please anyone implement drawing "jagged" edges for parts which hide notes in the part canvas?
finding out whether the edge has to be jagged or not is easy: class Part has a function bool hasHiddenNotes(), which tells you exactly this.

it's just a graphical issue which should be easy to implement for anyone who knows about qt and graphics in qt a bit (not me :( )

btw, the current behaviour (in experimental) is the following:
i think this is sane; please tell me whether you think the same ;)
(this is still work-in-progress: the score editor and steprec and probably some else auto-expand stuff isn't adapted properly right now, but will be)