HP 5100tn Printer Job Language - Technical Reference Manual - Page 186

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