MO3
Despite the name , five other tracker formats are supported besides MOD: Scream Tracker 3 ( S3M ) , FastTracker 2 ( XM ) , Impulse Tracker ( IT ) , OpenMPT ( MPTM ) and MultiTracker ( MTM ) . 
<triplet> Scream Tracker 3 <subj> S3M <obj> writable file format