V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
MML Maker Markup Language (FrameMaker)The Free On-line Dictionary of Computing (30 December 2018):
MML Human-Machine Language. A language from ITU-T for telecommunications applications. It has a complex natural-language syntax. [CCITT Recommendations Z.311-Z.318, Z-341, Nov 1984]. (1995-01-31)