Symmetric LISP A parallel {Lisp} in which environments are {first-class} objects. It is implemented in {Common LISP}. ["Parallelism, Persistence and Meta-Cleanliness in the Symmetric Lisp Processor", D. Gelernter et al, SIGPLAN Notices 22(7):274-282 (July 1987)]. ["A Programming Language Supporting First-Class Parallel Environments", S. Jagannathan, MIT-LCS/TR 434, 1989]. E-mail: Suresh Jagannathan. (1995-03-16)