ricardo 
Reviving a Dead Audio Format: The Return of #ZZM
Stefan Bohacek"So what kind of music capabilities did ZZT have? Since the goal of ZZT was also to allow players to create their own game world, it’s documented in the unofficial manual [...], but a bit loosely."
Reviving a Dead Audio Format: The Return of #ZZM
"So what kind of music capabilities did ZZT have? Since the goal of ZZT was also to allow players to create their own game world, it’s documented in the unofficial manual [...], but a bit loosely."