renoise use that convention https://files.renoise.com/manual/Renoise%20User%20Manual.pdf https://files.renoise.com/manual/Renoise%20User%20Manual.pdf (page 38).

renoise use that convention https://files.renoise.com/manual/Renoise%20User%20Manual.pdf https://files.renoise.com/manual/Renoise%20User%20Manual.pdf (page 38). I used psycle modular music in 1999 and I know that it was not the first tracker-like software to use that convention but it's as far as my memory goes.