Quote:
Originally Posted by Doitsu
AFAIK, it should be sufficient to use the .opf entries that are mentioned in the linked Github post.
However, I don't know when Apple introduced these metadata entries. I.e., it might be necessary to include com.apple.ibooks.display-options.xml for older iBooks versions.
For more information, also see this post.
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According to that, you can use the OPF entries for EPUB3. For EPUB2, you need the XML file.
I always convert to EPUB3 if I'm making it for iBooks anyway, the TOC doesn't work properly with just EPUB2.