Thread: Reader support of EPUB3, :target, popups
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Old 09-25-2020, 08:59 AM   #9
jhowell
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Posts: 7,099
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Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
Quote:
Originally Posted by ghmerrill View Post
Given that this popup footnote/endnote behavior is app-specific, is it documented anywhere?
See section 10.3.12 (Footnote Guidelines) in the Amazon Kindle Publishing Guidelines.

Quote:
Regardless of whether the aside element is used, Amazon requires formatting footnotes with bidirectional hyperlinks (the text is linked to the footnote and the footnote is linked back to the text). This makes it easier for customers to return to the text after viewing the footnote. On some Kindle devices, such as Kindle Paperwhite, footnotes with bi-directional hyperlinks are displayed in a pop-up.
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