> At least between Commodore and Escom versions I vaguely remember some minor
> differences. One seemed to be a problem with file flags.

But the binaries were the same?

> There was some other small differences, I just don't remember.

I'd like to read more on that as I always thought the contents of the 3.1 disks shipped by the succeeding parties (except the very first version from Village Tronic) was the same.