Describing the purpose of a link in EPUBs using aria-label
Description
It would be really great if hyperlinks would get an (optional) attribute to describe their purpose, and this being reported in EPUB outputs as values of aria-label attributes.
https://www.w3.org/WAI/WCAG22/Techniques/aria/ARIA8
Something similar is already in place for alt-text ("Edit Hyperlink..." -> "Accessibility" -> "Alt-Text") which I understand plays a role in PDF outputs.
Why is this valuable to you?
This would bring a GREAT accessibility enhancement in all those occasions where the hyperlink (or the hyperlinked text) does not provide enough context/information to the reader (i.e. when reporting DOI links - https://en.wikipedia.org/wiki/Digital_object_identifier - they almost never offer any info on the resource they link to)
Would this be possible? Thanks!