Microprogramming, Emulators and Programming Languages The problem we have been concerned with is that of converting language to action - or intellectual energy to mechanical energy. The medium that we use for this purpose is language and therefore we are preoccupied with the subject of language. In the areas of language investigation we have concentrated first on formalizing syntax and then on semantics. CACM March, 1966 Greem, J. CA660318 ES March 17, 1982 10:10 AM 1542 5 3198 3198 5 3198 3198 5 3198 3198 5 3198 1491 6 3198 3198 6 3198