Re: Popup footnotes in EPUB 3

It might be best to turn this into a proper issue at our github for
tracking purposes. I expect we can all ramble on about foot/end notes for
days, but an issue will force a resolution. As an aside, we need to be
careful about requiring specific RS behaviors. And of course the main
problem is all the hacks and workarounds content creators went through to
appease RMS SDK.

On Wed, Mar 5, 2025 at 7:27 AM Daniel Weck <daniel.weck@gmail.com> wrote:

> Thank you Laurent. To save you all reading the entire conversation thread
> in the GitHub issue tracker, here are useful pointers to existing (good?)
> practice:
>
> Apple:
> https://help.apple.com/itc/booksassetguide/en.lproj/itccf8ecf5c8.html
> "Use the <aside> element when you want to hide the footnote"
>
> Kobo:
>
> https://github.com/kobolabs/epub-spec/blob/master/README.md#footnotesendnotes-are-fully-supported-across-kobo-platforms
>
> https://github.com/kobolabs/epub-spec/issues?q=is%3Aissue%20epub%20popup%20footnote
>
> Lots of debating among content creators and readers, about the lack of
> interoperable "popup footnote" UX in reading systems:
>
> https://www.google.com/search?q=epub+popup+footnotes+aside+site:www.mobileread.com
>
> Feel free to add to this short list of references, and I will update our
> comment thread.
>
> Thank you!
> Regards, Daniel
>
>
>
> On Wed, 5 Mar 2025 at 14:56, Laurent Le Meur <laurent.lemeur@edrlab.org>
> wrote:
>
>> Hello,
>>
>> Please read https://github.com/edrlab/thorium-reader/issues/2833 and
>> Daniel's comments about the lack of specification of popup footnotes.
>> I found definitions for "footnote" and "noteref" in the EPUB 3.3 spec,
>> but nothing related to popup footnotes in the RS spec.
>> The upcoming work on EPUB 3.4 seems like a good time to properly specify
>> popup footnotes.
>>
>> Best regards,
>> Laurent Le Meur | EDRLab
>>
>>
>>
>>
>>
>>