Quote:
Originally Posted by AlanHK
Anyway, wanted to confirm that nothing actually refers to this id, so I won't break anything if I change them as I did to shut epubcheck up.
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No. As long as they're unique (and valid), no harm done. They can be anything. I've never even run into an issue with one that began with a digit on any reader (in any app), to tell the honest truth. But it's best to please Epubcheck when you can. I guess.
