HP Color LaserJet 5500 Technical Reference Manual page 186

10-6 Programming Tips
Commands Used by Printer Utilities
UEL Use before and after every PJL job.
COMMENT Use to add explanations within PJL code.
SET To modify a printer feature until the next
PJL reset condition.
RESET To set the printer to its user default
feature settings.
DEFAULT To modify the user default value of a
printer feature. (NOTE: In shared
environments, this feature should be used
by system administrators only.)
INITIALIZE To set the printer to its factory default
settings. (NOTE: In shared environments,
this feature should be used by system
administrators only.)
Printer utilities that are equipped for bi-directional
communications can request printer status using the
following commands:
INQUIRE To request the current setting for a
particular feature.
DINQUIRE To request the default setting for a
particular feature.
INFO To find the printer model, printer
configuration, memory available, status
information, page count, or printer
variables.
ECHO To synchronize requested status
information.
USTATUS To be informed when the printer status
DEVICE changes.
USTATUS To receive unsolicited printer status at
TIMED periodic intervals.