What ^FR does
^FR inverts the next field so it prints in the opposite colour of its background — typically white text or graphics inside a black box. Commonly paired with a filled ^GB rectangle to create high-contrast callouts.
Syntax
^FRExample
^XA
^FO50,50^GB200,60,60^FS
^FO60,60^FR^A0N,40,40^FDSALE^FS
^XZPaste this into the free ZPL viewer to see it render, or convert it to PDF.
Related commands
See the full ZPL command reference for all 92 documented commands.
