Re: [MathML3-last-call] PMML @title attribute

> In terms of providing tooltip functionality within MathML in  
> isolation, there is already support via <maction  
> actiontype="tooltip">...</maction> which has been in MathML a long  
> time, and that MathML 3 now elevates to normative status.  
> Consequently, there isn't much appetite for introducing another  
> mechanism via a title attribute.
>  ...
> There are various JavaScript + CSS workarounds, and so on, but  
> admittedly the current state of implementation leaves a lot to be  
> desired.

It's not hard to work around Firefox's lack of support for <maction  
actiontype="tooltip">, with a touch of javascript. See, e.g.

      http://golem.ph.utexas.edu/~distler/blog/archives/002105.html#WebkitU1

as an example. I don't think minting a redundant @title attribute  
would be a good idea.

Jacques