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.