I've just been offered a free download of a Windows program named "Diff Doc" which looks like it could help me. I'm always a bit suspicious, however, of software I've never heard of unless someone I trust can vouch for it. Has anyone used it, and if so is it any good?
Alternatively, is there any other file comparison software out there somewhere? (I'm actually looking for something that will highlight differences in large unicode text files, i.e. files that can be read by Wordpad but not, for example, Notepad.)