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Command Reference
GS q Print UPC/EAN Checksum
Description
Prints the checksum digit for the specified barcode. The checksum digit is printed in the
current font, at the current text position. Currently the only supported symbologies are
the UPC/EAN barcodes.
Expression
ASCII
n m d1…dm
Decimal
n m d1…dm
Hex
n m d1…dm
Parameters
n1 selects the barcode symbology to be used
m specifies the number of characters to be encoded
d1…dm the data characters to be encoded
GS RS Set Inverse Print Mode
Description
Causes all the data that follows the command and appears on the current line to be
printed as inverse characters (white on black). Inverse characters are canceled when
character attributes are canceled.
See Also
GS US
Expression
ASCII GS RS
Decimal 29 30
Hex 1D 1E
Parameters
None
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