Glossary295GlossaryNetWareA network operating system developed by Novell, Inc. It initially usedcooperative multitasking to run various services on a PC, and the networkprotocols were based on the archetypal Xerox XNS stack. Today NetWaresupports TCP/IP as well as IPX/SPX.OPCOrganic Photo Conductor (OPC) is a mechanism that makes a virtual image forprint using a laser beam emitted from a laser printer, and it is usually green orrust colored and has a cylinder shape.An imaging unit containing a drum slowly wears the drum surface by its usagein the printer, and it should be replaced appropriately since it gets worn fromcontact with the cartridge development brush, cleaning mechanism, and paper.OriginalsThe first example of something, such as a document, photograph or text, etc,which is copied, reproduced or translated to produce others, but which is notitself copied or derived from something else.OSIOpen Systems Interconnection (OSI) is a model developed by the InternationalOrganization for Standardization (ISO) for communications. OSI offers astandard, modular approach to network design that divides the required set ofcomplex functions into manageable, self-contained, functional layers. The layersare, from top to bottom, Application, Presentation, Session, Transport, Network,Data Link and Physical.PABXA private automatic branch exchange (PABX) is an automatic telephoneswitching system within a private enterprise.PCLPrinter Command Language (PCL) is a Page Description Language (PDL)developed by HP as a printer protocol and has become an industry standard.Originally developed for early inkjet printers, PCL has been released in varyinglevels for thermal, dot matrix printer, and laser printers.PDFPortable Document Format (PDF) is a proprietary file format developed byAdobe Systems for representing two dimensional documents in a deviceindependent and resolution independent format.