QR Code Bar Code - Error correction

[tinohager]

The ^BQ command has an error correction but also the ^FD command has an error correction (Page 114) Does anyone make sense of the documentation?

[YipingRuan]

Seems the ^FD error correction decides

^XA
^FO20,20^BQ,2,10^FDQA,0123456789ABCD0123456789ABCD 2D code^FS

^FO400,20^BQ,2,10^FDHA,0123456789ABCD0123456789ABCD 2D code^FS

^FO20,400^BQH,2,10^FDLA,0123456789ABCD0123456789ABCD 2D code^FS

^FO400,400^BQL,2,10^FDHA,0123456789ABCD0123456789ABCD 2D code^FS

^XZ