Generate OMR codes from RPGLE

Hello everyone

I need generate OMR codes (Optical Mark Recognition) with RPG in a serie of
documents, something similar to the generation of bar-codes.

I tell you a little about my casuistry ....

These codes are marks that are printed and that depending on the absence or
presence of them indicates a sequence order of the documents printed. In my
case this serves to control the sequence of documents in a envelope making
machine. It has a system that reads the marks and as expected by a
determined sequence, ensures that in each envelope are the documents that
they have to go together.

Imagine that I want to put in the same envelope, an invoice, a letter of
change of rates and a marketing sheet for each provider. The RPGLE program
will generate the three documents and print a different Mark (OMR) for
each document. This will be repeated by each provider.

Once generated and printed, the document block will be ordered:
Provider1- DOC1-DOC2-DOC3; Provider 2- DOC1-DOC2-DOC3; and successive.......

It is loaded in the inserter, and this is through an OMR reading software
detects the sequence and guarantees that it envelops the same sequence of
three documents in the same envelope.

That said, if any of you have had experience generating these codes and can
help me a little I would appreciate it.

regards