Re: Whither MathML support?

@Ivan, from the MathML doc, Content MathML support comes with an extension. http://docs.mathjax.org/en/latest/options/extensions/Content-MathML.html <http://docs.mathjax.org/en/latest/options/extensions/Content-MathML.html>

But, as Bill K. states, most MathML content production is Presentation Markup. Which leaves us with potential accessibility issues.
In the scope of WP/EPUB4, it may be good for the a11y taskforce to give advice on this issue.    

In the interim, I hear a strong will to have MathML supported in Readium-2. 
As we intend to inject MathJax only when a resource is using it, the Publishing WG will have to provide a way to tag such resources in the WP manifest, as currently done in EPUB3.

Cordialement, 
Laurent Le Meur