Appendix J Abbreviations
Abbreviation Full name Explanation
MVS Multiple Virtual Machine IBM operating system for
mainframes. This is the most
commonly used operating
system for large
corporations.
OS/390 New name for MVS IBM operating system for
mainframes. This is the most
commonly used operating
system for large
corporations. The only
operating system that
supports IBM CMOS and
SYSPLEX technology.
PPD Page Printer Demon Enhanced version of
LPR/LPD. The enhancement
enables bidirectional
communication when
printing. Not part of the
standard TCP/IP stack
(programs). Used by ida
Psxx, ida RPPC, IBM
Network printers, PSF/AIX
and others. Works only in
conjunction with PPR. The
sender of a printjob via
TCP/IP will be PPR and the
receiver will be PPD.
PPR Page Printer Requester Enhanced version of
LPR/LPD. The enhancement
enables bidirectional commu-
nication when printing. Not
part of the standard TCP/IP
stack (programs). Used by
ida PSS, ida HPR and PSF.
Works only in conjunction
with PPR. The sender of a
printjob via TCP/IP will be
PPR and the receiver will be
PPD.
- 42 -
