dg/l

from The Free On-line Dictionary of Computing (8 July 2008)

DG/L

   1. Descriptive Geometry Language.  Early CAD/CAE language,
   used light pen.  "Interactive Graphic Consoles - Environment
   and Software", R.L.  Beckermeyer, Proc FJCC 37 (1970).

   2. Data General ca 1973-1974.  Derivative of ALGOL 60,
   developed from DG's ALGOL-5, used as the systems language
   under {AOS} and {RDOS} for the DG Eclipse family of computers.
   Replaced by PL/I in the early 80's.  Data General manual
   093-000229-01.