(GLS) A software engineer whose most notable contributions to the art of computing include the design of Scheme (in cooperation with Gerald Sussman) and the design of the original command set of Emacs. He is also known for his contribution to the Jargon File and for being the first to port TeX (from WAITS to ITS). He wrote the book "Common Lisp", which virtually defines the language. He was working at Sun Microsystems, Inc. from 1996 to the present (June 2001).