Scala can open, transform, and save standard MIDI files. It can also export MIDI tuning tables in .tun format. It provides a native, human-readable sequencing language (.seq). But it is best known for its use of human-readable text files to store musical scales.
The Scala scale file format1 has become a standard for representing microtonal scales in a way that can be used by other software. The Scala site lists over thirty applications that support the format, including several major commercial packages like Apple Logic 7, Celemony Melodyne 3, and Cakewalk Rapture.2 Scala's developer also makes freely available an archive of over 5,000 Scala scale files, containing many musical scales of historical, cultural, and theoretical interest.
"Scala scale file (.scl) format". www.huygens-fokker.org. Retrieved 2021-09-15. http://www.huygens-fokker.org/scala/scl_format.html ↩
Rapture Microtuning and Alternative Tunings http://www.cakewalk.com/support/rapture/rapturetuning.asp ↩