Kernel Commands - HP Color LaserJet 5500 Technical Reference Manual

Kernel Commands

Introduction
This chapter explains the following three PJL commands:
Universal Exit Language (UEL) command exits the
current printer language and returns control to PJL.
ENTER command selects a printer language for
processing the current job.
COMMENT command enables developers to add
comments to their PJL commands.
Together, these commands provide a minimum set of tools
necessary to implement job control. These commands allow
applications to set job boundaries, add comments, and
programmatically select printer languages.
Besides programmatic printer language switching, you can
configure some LaserJet printers to switch printer
languages automatically between print jobs. Following the
descriptions of the UEL, ENTER, and COMMENT
commands, this chapter describes the different methods
used to switch printer languages.
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