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
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