HP 4600 Printer Job Language - Technical Reference Manual - Page 192

ECHO To synchronize status readback information. The application should send an ECHO command before any other status readback commands; all status responses before the returned ECHO response should be discarded to ensure proper synchronization. STMSG To display a customized message and take the printer off-line until the operator presses the On Line, Continue, Job Cancel, or Reset key. Returns the name of the key that the operator pressed. USTATUSOFF To turn off all unsolicited status before specifying the desired USTATUS. USTATUS PAGE To receive notification as each page lands in the output tray. USTATUS JOB To monitor job progress. Sends status message when job has completed. Spooler Examples The following examples show jobs used by spooling applications: Jobs that monitor job progress and confirm job completion Jobs that notify the user to load specific forms or paper Jobs that control printer resources and print selected pages Jobs that print a banner page followed by an applicationgenerated job (application specifies printer language) Jobs that print a banner page followed by an applicationgenerated job (application does not specify printer language) In each example, the indented lines indicate commands belonging to a print file created by another application. 10-12 Programming Tips