It is part of vArranger script for chords. Noel was right from start and
John-Luke is correct. about arrangers. It was not in the manual, so I was a little bit confused. I have asked about this, and got an answer on another forum after it confused Noel
1+8 means octave only, for example notes C4 + C5
1+5 means quint only, (chord without third) for example C4 + G4
https://en.wikipedia.org/wiki/Power_chordSo with the knowledge above, I assume it is not possible to have real tracks play these in BIAB?
Misha.