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 |
mspecifies 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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