We don't provide an example of a preprocessor written in ACUCOBOL-GT. I believe the onus for this option was there was a customer who had written one and wanted us to provide support for it.

Apologies. We provide a utility called Boomerang - https://www.microfocus.com/documentation/extend-acucobol/1040/extend-interoperability-suite/BKUSUSDBUGS101.html  At one point in time this utility was written in ACUCOBOL-GT.

Thank you very much for your help. From trial and error i have it working but it will be good to confirm or prove wrong my findings.