[whatwg] Mathematics in HTML5

[White Lynx]

Michel Fortin wrote:
> Yes, sub/sup will behave like HTML sub/sup with offsets being based  
> > on font size like it is currently done in HTML implementations,  
> > while llim/ulim and marker/submark will have offsets based on size  
> > of their base (operator, fence, matrix etc.) not font size like in  
> > case of HTML sub/sup elements.
> 
> Am I right to say than an exponent made with <sup> following a fence  
> of a undefined height cannot be aligned correctly vertically? 

Yes, sup/sub will work like in HTML. This behavior is not perfect in case
of resizable operators, fences, matrices and vectors however in this cases operator 
limits (llim/ulim) and fence markers (marker/submark) provide necessary functionality.


> Could  
> the same thing be said when <sup> is preceded by a matrix?
> 

Yes, fence markers (marker/submark) will be aligned near top or bottom
edge of matrix's fence, while sub/sup will be backward compatible with
HTML and will apply to PCDATA base only, like in HTML.


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