Feather notation
Interesting to compare the notation of the same passage in Logic ca 1997 with the same thing in MuseScore today:


For the Logic version, I had to hack in the notes and stems – I can't remember how! – and then draw the beams in by hand. MuseScore was… fiddly and hacky also, but the results are acceptable.
(Not going to reveal what this is yet: an ongoing project :)