.ETF File Extension
File TypeENIGMA Transportable File
What is an ETF file?
Text-based format exported by Finale and other MakeMusic programs; similar to a Finale music notation (.MUS) file, but contains data encoded as text instead of binary; designed for sending Finale files over e-mail so they don't get corrupted.
The acronym ENIGMA stands for "Environment for Notation utilizing Intelligent Graphic Music Algorithms."