Thanks, Bob. And your further two postings after the glossary are invaluable. So, it appears that triads for playback are: C, Cm and C+. There is no available triad for a diminished chord since Co and Co7 both produce C Eb Gb Bbb on playback, but the very nature of a diminished chord (minor 3rds between all notes) would be kind of lost without the bb7 on there anyway, so just 1 b3 b5 wouldn't be all that desirable, I'm supposing.