HP PCL/PJL reference - Printer Job Language Technical Reference Manual

EN Environment Commands 6-1
6
Environment
Commands
Introduction
Hewlett-Packard printers have many features you can set using
printer commands or by pressing control panel keys. Since previous
jobs can change feature settings to unwanted values, applications
should set printer features affecting the print job to a desired state at
the beginning of the job.
Setting features to a desired state is easily accomplished using a
combination of PJL and printer language commands. This chapter
describes sets of printer features known as print environments, and
the PJL commands you use to set printer features to a desired state,
such as:
DEFAULT sets the default value for environment variables,
storing these values in non-volatile RAM.
INITIALIZE resets the current and default PJL variables to the
factory default values.
RESET resets the current PJL variables to the default values.
•SET sets an environment variable to a specified value until the
next PJL reset condition.
Note For a list of default feature settings, see Appendix A.
Note For information about products newer than those included in this
book, see the Printer Job Language Technical Reference Addendum,
which includes product-specific information about newer products, as
well as commands and variables added to PJL to support these
newer products.