W3C home > Mailing lists > Public > www-math@w3.org > June 2014

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

http://www.w3.org/Math/draft-spec/mathml.html#chapter3_presm.mtable.attrs

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 
|mroot| 
<http://www.w3.org/Math/draft-spec/mathml.html#chapter3_presm.mroot>,

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

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 21:27:47 UTC