Lexmark T656 User Manual page 109

Byte 12 Bit 0 UCC/EAN FNC1:
If this flag is B'1', this QR Code symbol will indicate that it conforms to the UCC/EAN application
identifiers standard. Byte 12 Bit 1 must be B'0'.
Byte 12 Bit 1 Industry FNC1
If this flag is B'1', this QR Code symbol will indicate that it conforms to the specific industry or
application specifications previously agreed with AIM International. An application indicator must
be specified in Byte 13. Byte 12 Bit 0 must be B'0'.
Byte 13, Application indicator for Industry FNC1
When the Industry FNC1 flag (Byte 12, Bit 1) is B'1', this parameter specifies an application indicator.
When the Industry FNC1 flag is B'0', this parameter is ignored and should be set to X'00'. Exception
condition EC-0F12 exists if an invalid application-indicator value is specified.
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