I don't use RealBand and thus do not read the forum for it, but Jim alerted us to the topic being discussed.

Blast it, I've been writing the same thing for decades about the 2 chords. Very few listen. All you have to do is read the chord shortcut description in the file, /BB/data/pgshortc.txt

; Note these are already defined in BB, and you can't over-ride these shortcuts
;sus2@2 add2@2 m+@m#5 dim7@dim 7aug@7+ sus4@sus 11@9sus 9sus4@9sus
;13sus4@13sus add9@2 7sus4@7sus s@7sus h@m7b5 d@dim J@MAJ7
; f@7b9 m7+@m7#5 NC@C. no chord l@7Alt u@(Blues) 7u@7(Blues)
; Lyd@lydian Lyd@lyd Lyd@4#

This to me clearly implies that BIAB handles sus2, add2, and add9 chords the same as a 2 chord. All four chord types give you the same thing. PG Music, is that wrong?

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.