PROC procedure language
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PROC utilizes two input buffers (primary and secondary) and two output buffers (primary and secondary). 9 file buffers. Some Pick emulations (e.g. Reality X) release extended versions of PROC, sometimes called New PROCs with an additional 9 file buffers. New PROCs are identified with a PQX or PQN on the first line of the script, whereas traditional PROCs commence with PQ.
In about 1975 an expanded version of PROC called "PORC" was developed by John Timmons and Paul Desjardine. This was then further developed by Tim Holland under the employ of SMI in Chicago, initially called "SMILE" (SMI Language Extension?) and then renamed RPL (Realtime Programming Language). RPL was a compiled language featuring 250 input buffers but still recognisably derived from PROC.