Also related to the conversion program, see David Bayliss’s article “Computer Aided Disaster” at Comp. Aided Disaster
In particular the last section: “The application converter”.
Also a handy pdf created by Carl from the online help is attached:
Legacy2ABC.pdf (46.4 KB)
and finally the “LearnABC.pdf” file https://www.icetips.com/ftp/clarion/learnabc.pdf has a chapter on the converter