(EPL) A PL/I subset dialect by McIlroy, Morris et al, the fIRst running PL/I compiler. It was used by {Bell Labs} and {MIT} to write {Multics}. EPL had extensions to handle the segment/offset nature of Multics pointers. See also REPL, TMG. ["EPL Reference Manual", Project MAC, April 1966]. [Sammet 1969, p. 542]. (1995-11-15)