I came across a thread where I saw that there’s a feature in Buzz which enables you to write chords without using many note columns.
For example you want to write this chord:
C-4 E-4 G-4 B-4
Normally you’d need 4 note columns. With that feature, tho, you can write just:
The note C-4 is the root note. 4, 7, and B are in the fx column. They stand for: 4 = 4 semitones from root (E-4), 7 = 7 semitones from root (G-4) and B (hex) = 9 semitones from root (B-4).
IMHO it’s kinda cool. And it takes less space.
In Renoise it may be set differently, something like Cxxx (where xxx are the additional notes in a chord).
I honestly don’t know if I’d use it a lot, but it could be a fun little feature to have.