# ProTracker documentation (provenance note)

Fetched 2026-08-30.

- `PT2.3.ReadMe!`, `PT2.3A.txt`, `PT2.3.Update!`, `PT2.3B-ReadMe` — the ReadMe, bug-fix notes and update notes of ProTracker 2.3A (Mushroom Studios / Noxious, 1993-01-01) and the 2.3B AGA-fix upload note; from https://github.com/cmatsuoka/tracker-history/tree/master/reference/amiga/protracker (Claudio Matsuoka's tracker-history collection). Latin-1 text.
- `PTEffects.txt`, `PTFileFormat.txt` — "Protracker V2.0A Effect Commands" and "Protracker Song/Module Format" by Lars "ZAP" Hamre / Amiga Freelancers, from `reference/amiga/protracker/Protracker_v2.0a/` in the same repository.
- `pt_versions.txt` — a version table 0.89–4.0 compiled by Sky AKA Bernhard Lukas, same repository.
- `PT2.3D-helpfile-echolevel.md` — the built-in help file of ProTracker 2.3d (Oct. 1994, Peter "CRAYON" Hanning, Mushroom Studios), edited, annotated and formatted by Brendan "Syphus" Ratliff (@echolevel), updated 2019-10-29; from https://raw.githubusercontent.com/echolevel/Protracker-2.3D-Helpfile-Manual/main/README.md (56,743 bytes).

ProTracker is Public Domain (PT2.3.ReadMe!: "may be copied freely and included in any PD library").