And then of course, comes the problem of how to notate solo / tutti in Sibelius. There are no predefined keywords for that, and though I could add them to the dictionary, I'd have to make sure they have no effect on playback. I'm using "MIDI messages", essentially coded directives, to control the number of "players" in each section, which would be unintelligible to humans even if they were visible in the printed score (they're not).