Text-based format exported by Finale and other MakeMusic programs; similar to a Finale music notation (.MUS) file, but contains data encoded in text instead of binary; designed for sending Finale files over e-mail so they do not get corrupted.
The acronymn ENIGMA stands for "Environment for Notation utilizing Intelligent Graphic Music Algorithms."
Program(s) that open etf files
Mac OS
MakeMusic Finale, Allegro, PrintMusic, or SmartMusic
Windows
MakeMusic Finale, Allegro, PrintMusic, or SmartMusic