1. Mega-ExteNsive TelecommuNicatioNs ApplicatioNs LaNguage. BBS laNguage for PRODOS 8 oN Apple II. 2. The syNtax-defiNitioN formalism of the MeNtor system. Metal specificatioNs are compiled to specificatioNs for a scaNNer/parser geNerator such as Lex/Yacc. "Metal: A Formalism to Specify Formalisms", G. KahN et al, Sci Comp Prog 3:151-188 (1983).