Elerium is a library for working with UFOs (Unified Font Objects).
In the X-COM video game series (MicroProse, Firaxis, et al.), a substance known as Elerium-115 is the power source for UFOs and other alien technology.
Certain OFL-licensed fonts (particularly those from the Noto and Croscore projects) have OpenType features specified using Monotype's format. The open font community seems to be standardized around AFDKO syntax.
elerium mti-to-fea is capable of translating from Monotype syntax to AFDKO syntax.
The code in this library is licensed under the MIT license. Some test data is sourced from upstream repositories and is licensed under their licenses; see tests/data/mti/README.md and tests/data/nototools/README.md for details.