iBook supports that, as Apple points out. And Marvin, I think.
The fact is,
a) Amazon Kindle enink devices support only foontnotes with back links
b) Calibre Viewer supports footnotes with backlinks or/and epub3 footnotes (epub:type)
c) ibook (and Marvin) supported epub3 footnotes. But I am not using any Apple products now, so I can't tell if this is still the case.
So my suggestion is to prepare epub3 footnotes with backlinks. That is my experience, it has not failed me.
Last edited by nqk; 01-14-2021 at 09:03 PM.
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