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Re: Displaystyle and mtable

From: David Carlisle <davidc@nag.co.uk>
Date: Wed, 11 Jun 2014 17:11:39 +0100
Message-ID: <53987FBB.1000707@nag.co.uk>
To: <www-math@w3.org>
On 11/06/2014 16:59, Frédéric WANG wrote:
> where we expect the content to inherit displaystyle. In any case, it 
> seems that the spec should be clarified. 

Clearly if people are misreading it it could be clearer
(or at least a clarifying text could be added somewhere such as an 
errata document)
But at present I'm not sure what should change.

the attribute table


explicitly lists the default as "false"

and the text just after that table highlights this again:

> The |displaystyle| attribute is allowed on the |mtable| element to set 
> the inherited value of the attribute. If the attribute is not present, 
> the |mtable| element sets |displaystyle| to "false" within the table 
> elements

I suppose the only thing that could be said is that mtable is not 
mentioned in 3.16 where it says

> They are automatically adjusted by the various script and limit 
> schemata 
> <http://www.w3.org/Math/draft-spec/mathml.html#chapter3_presm.scrlim> 
> elements, and the elements |mfrac| 
> <http://www.w3.org/Math/draft-spec/mathml.html#chapter3_presm.mfrac> 
> and |mroot| 
> <http://www.w3.org/Math/draft-spec/mathml.html#chapter3_presm.mroot>, 
> which typically set |displaystyle| false and increment |scriptlevel| 
> for some or all of their arguments. (See the description for each 
> element for the specific rules used.) 

Although that's just a pointer not an exaustive list and anyway ends in 
(See the description for each element for the specific rules used.) 
which covers everything:)

Is this the part that you think should be clarified?  a minimal change 
being to say

... and the elements |mtable, mfrac| 
<http://www.w3.org/Math/draft-spec/mathml.html#chapter3_presm.mfrac> and 

Received on Wednesday, 11 June 2014 16:12:14 UTC

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