HP 4100n HP LaserJet 4100mfp -User Guide - Page 149
Understanding printer commands, For additional information, refer
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Understanding printer commands Most software programs do not require you to enter printer commands. See your computer and software documentation to find the method for entering printer commands, if needed. PCL 5e HP-GL/2 PJL PCL 5e printer commands tell the printer which tasks to perform or which fonts to use. The printer has the ability to print vector graphics using the HP-GL/2 graphics language. Printing in the HP-GL/2 language requires that the printer leave PCL 5e language and enter HP-GL/2 mode, which can be done by sending the printer PCL 5e code. Some software programs switch languages through their drivers. HP's Printer Job Language (PJL) provides control above PCL 5e and other printer languages. The four major functions provided by PJL are: printer language switching, job separation, printer configuration, and status readback from the printer. PJL commands might be used to change printer default settings. For additional information, refer to http://www.hp.com. Understanding printer commands 147