ZPL commandsPrinter and media~HBBattery StatusNot supported by zplkit yetRequests the battery status of a battery-powered printer.Format~HB^CVCode ValidationTurns bar code data validation on or off. With validation on, the printer checks each bar code's data against its symbology and prints an error message in place of a bad code.~HDHead DiagnosticRequests printhead diagnostic information from the printer.