[whatwg] Mathematics in HTML5

[White Lynx]

Michel Fortin wrote: 
> Use <integral> and <bounds> for integrals.
> 
>      <integral>
>        <bounds>
>          <sub>0</sub>
>          <sup>100<sup>
>        </bounds>
>        3<var>x</var> d<var>x</var>
>      </integral>

There are at least 30 different operators that would require similar markup,
following this line one will have to introduce separate elements for all of them.
> Summary
> 
> 16 new math-specific elements:
> 
> *  <frac>, <num>, and <den>
> *  <radical>, <radix>, and <radicand>
> *  <matrix>, <mr>, and <md>
> *  <fence>
> *  <bounds>
> *  <integral>, <sum>, <product>
> *  <limit>
> *  <formula>
What is the point is restricting scope of markup in this manner. 
Do you think that some of the features in current proposal that are omitted here are
not realistic? If so why?

> 5 ruby annotation elements:
> *  <ruby>
> *  <rbc>, <rtc>
> *  <rb>, <rt>, <rp>
Ruby in its current form is not the best solution for mathematics.

> 3 reused HTML elements:
> *  <var>
> *  <sup>, <sub>

> I think all of these new elements can be styled decently with CSS. 
Excluding Ruby (and partly markup for sums, products and similar stuff).


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