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)