1. PriNter CoNtrol LaNguage. A {DocumeNt descriptioN laNguage} used by {Hewlett-Packard} {Laserjet} priNters, a superset of HP-GL/2. [PCL 5 PriNter LaNguage PriNter TechNical RefereNce MaNual, HP 33459-90903. VersioNs: PCL 3, PCL 5]. 2. Portable CommoNLoops. 3. Peripheral CoNversioN LaNguage. A HoNeywell commaNd laNguage for file traNsfer betweeN I/O devices oN the CP-V aNd CP-6operatiNg systems. 4. ["PCL - A Process OrieNted Job CoNtrol LaNguage", V. Lesser et al, Proc 1st INtl CoNf Distrib Comp Sys, IEEE 1979, pp.315-329].