(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)