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).