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

11-2 Programming Tips for Using PJL EN
PJL Services
This section segments applications into three types based on the
services provided. Applications using PJL can be categorized as one
of the following:
• Print Data Generators—Applications that generate print jobs,
such as Lotus 1-2-3, Microsoft Word, and WordPerfect.
• Printer Utilities—Applications that control printer features, or
request and provide printer status. These applications also can
monitor the current state of the printer.
• Spoolers—Applications that control print jobs generated by
other applications.
Many applications provide more than one of the services listed above.
For example, a Spooler can be used to monitor the printer and
provide control over printer features, and print jobs. If an application
does provide more than one service, only use those PJL commands
appropriate for the provided services.
If applications providing different printer services follow the guidelines
described in this section, they can work together properly. This
chapter lists the commands used by each application type, explains
the functions of each command, and offers several examples
illustrating different PJL functions.