Postscript Addendum; A System Parameters - QMS -ps 800+ User Manual

Part V
POSTSCRIPT
Addendum
Introduction
The POSTSCRIPT Addendum is an addendum to the
POSTSCRIPT
Language Reference Manual. It contains
information on printer-specific system parameters and
idle-time font scan conversion. Refer to the
POSTSCRIPT
Language Reference Manual for information on standard
POSTSCRIPT operators.
A System Parameters
The QMS-PS 800+ has an extensive set of parameters
that control its behavior. Some of these parameters are
stored in non-volatile memory (EEROM), so they persist
even when the machine is turned off. Other parameters
are volatile and generally remain in effect only through
the execution of a single job. This addendum covers
both types of parameters.
All system parameters are accessed through a special
dictionary named statusdict, which is separate from sys-
terndict and userdict (where all the standard Post-
Script operators and procedures are defined). System
parameters are changed by sending the QMS-PS 800+ a
POSTSCRIPT program that accesses statusdict.
To gain access to statusdict, execute statusdict begin,
which pushes statusdict on the dictionary stack. Once
this is done, the operators defined in statusdict may
be invoked directly by executing their names (until the
matching end).
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