Source : Free On-Line Dictionary of Computing

PL516
     
        An {ALGOL}-like {assembly language} for the {DDP-516}, similar
        to {PL360}.
     
        ["PL 516, An ALGOL-like Assembly Language for the DDP-516",
        B.A. Wichmann, Natl Phys Lab UK, Report CCU 9, 1970].
     
        (1995-01-05)