(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)