Printronix ThermaLine Series - Manual (Page 228)

Bar Codes 5–90
FONT Optional parameter to select the font for the human
readable data field. The default value, N, selects the
normal ASCII 10 cpi font. Enter O to select the
OCR–A 10 cpi font; enter X to select the OCR–B type
font.
STOP Ends the Bar Code command while the IGP/PGL
continues in the Create Form Mode. Enter STOP. If
STOP is not entered, an error message results.