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==Derivative projects==
Additional computer language projects grew out of CUPL. Most notably, the CUPL compiler was reworked to implement a subset of the PL/I programming language, called [[PL/C]]. PL/C retained the diagnostic and error correction features of CUPL. Audio CUPL was an implementation to accept verbal CUPL statements spoken by the programmer. Each programmer trained the system by first speaking a standard set of CUPL vocabulary words for reference.<ref>{{cite web|id={{hdl|1813/5896}}|url=http://hdl.handle.net/1813/5896|title=On the Feasibility of Voice Input to an On-Line Computer Processing System|date=July 1969|publisher=Computer Science Technical Reports (69-38)|accessdate = 2013-12-14}}</ref>
== Retrocomputing implementation ==
There is an implementation of CUPL and CORC in modern C for Unix-like systems that includes both transcriptions of the original manuals and a chrestomathy of programs in these languages. It is available at the [http://www.catb.org/retro/ Retrocomputing Museum].
==References==
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