Thanks. I also managed to get KW running under UAE so I could generate a simple test document to compare. But the result was the same.
I just tried it out with a KW test document saved from KW2. I'm afraid the result was the same. It still thought it was text. What I have noticed is that KW files are an advanced form of IFF. I don't know if they needed to be but it always saved as IFF catalogue files, IIRC, which is an IFF file embedded inside a CAT container.
Great. It works! :-) Thanks for improving it. If I couldn't get it working this time I was suspecting I had done something wrong. :-D I've confirmed most of my old files were mail merged, which was efficient at the time. But unfortunately for me I still need to load KindWords to merge them back. At least I hope it does as I could only see a print merge function. Well, at least we now have a tool after all these decades, so will be happy to share this news with my club. :-)