TROY Group MAN-EXT2000 manual Glossary and Index D-11

OSF/1 DEC's version of UNIX that was originally called ULTRIX and is now called Digital UNIX. OSF/1 uses the standard Berkeley lpr/lpd procedures for printing to remote host computers and print servers.

OSI Reference Model A seven-layer model developed by the International Standards Organization which is used as a reference for developing protocols. Since each layer performs a different function, development and debugging are simplified, and there is greater flexibility (for example, this approach allows TCP/IP to run over both Ethernet and Token Ring).

P1284 An IEEE standard that defines a high-speed bidirectional parallel printer port. P1284 ports are also compatible with the Centronics standard. There are three types of physical connectors associated with the 1284 standard: 1284A (25-pin DB25), 1284B (36-pin standard Centronics), and 1284C (miniature Centronics). pp. 1-3,1-6, ,2-20.

Packet A group of data and control information that is sent over a network. Often used interchangeably with frame, although frame is normally used with lower-layer protocols like Ethernet, while packet is associated with higher layer protocols like IP and IPX.

Page Description Language A control language usually consisting of commands embedded within a document that control the way the document will look when printed. Such commands would set the type of fonts, page margins, colors, graphics, etc. within the document.

Parallel Port On a printer, a port that transfers data 8 bits at a time for maximum performance. The parallel port usually has a 36-pin Centronics connector. p. 1-3 through 1-6, 2-7, 2-8, 1-19, 2-20, A-4, A-5.

PATHWORKS The Digital Equipment Corporation network operating system for PCs and Macintosh computers. pp. 1-2;11-6 to 11-9,14-20, 14- 21, 14-22.

PCL A page description language originally developed by Hewlett- Packard for its LaserJet printers.

PCONSOLE A NetWare utility program for configuring and managing printers. pp. 5-16 through 5-17;5-22 through 5-24.

PDL An abbreviation for Page Description Language.

Glossary and Index D-11