Sometimes when checking a book, the function comes up with a complaint, that the type of a file is "application/xml" in the spine. It issues a warning that not all readers can handle this, and advises to change it to "application/xhtml+xml."
However, after allowing it to do so, and then checking again, the warning is the same, but exactly the other way around: not all e-readers can handle "application/xhtml+xml", and the advice is to change it to "application/xml".
So, what's the best type? xhtml+xml, or xml?
Maybe the editor should see Freud sometime
