OML (aka TeX math italic) is a 7-bit TeX encoding developed by Donald E. Knuth.[1] It encodes italic Latin and Greek letters for mathematical formulas and various symbols.[2]
^Mittelbach, Frank; Fairbairns, Robin; Lemberg, Werner (2016-02-18) [1995]. "LATEX font encodings"(PDF). LATEX3 Project Team. p. 33. Archived(PDF) from the original on 2017-07-10. Retrieved 2017-07-10.