(HMSL) A programming language for experimental music composITion and performance. IT is a set of object-oriented extensions to Forth. (ITs near-total unintelligibilITy to people unfamiliar wITh Forth has led some to expand "HMSL" as "Her Majesty' s Secret Language".) Phil Burk (who also later developed pForth), Larry Polansky, and David Rosenboom started developing HMSL in 1980 while working at the {Mills College Center for Contemporary Music (http://www.mills.edu/LIFE/CCM/CCM.homepage.html)}. As of June 1998, development is ongoing. . (1998-09-07)