Adding more DC metadata elements to ePubs
I want to add some more dc: metadata elements to epubs that do not appear to be available in the edit metadata dialogue, such as dc:subject and dc:contributor with various roles. I can use Tweak ePub to edit these directly into the opf file within the ePub, but should I also add them to the metadata.opf file which exists in the calibre library folder for the book?
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