octaves in the mod fileformat
category: code [glöplog]
Ah, true... though even IT doesn't apply Vxx like that and it doesn't seem to create much problems.
Yeah, it's not obvious with many tunes (A popular example is Mechanism Eight by Necros). There are of course many S3Ms made with Impulse Tracker and other trackers, so the best is of course to decide at runtime how to handle such effects (something that I look into adding to OpenMPT).