Ok, thanks to IDEA, I now have a DTD. Yeah!
I want to use the same DTD for a bunch of files, so I moved the generated DTD to a file.
How do I use it?
I know that I need some sort of !DOCTYPE declaration that references my file but the IDEA documentation on using DTDs is singularly unhelpful. I searched around on the web and could not find any useable documentation about this issue.