Early PL/I

<language> (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].

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