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Re: Comparison Table

From: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>
Date: Fri, 5 Mar 2010 18:12:53 +0100
To: John Foliot <jfoliot@stanford.edu>
Cc: "public-html-a11y@w3.org" <public-html-a11y@w3.org>
Message-ID: <20100305181253433019.293450a4@xn--mlform-iua.no>
John Foliot, Thu, 4 Mar 2010 21:24:09 -0800 (PST):
> A huge thanks to Leif for assembling the following table:
> http://www.w3.org/html/wg/wiki/ChangeProposals/comparsionSummarySolutions

> for those who wish to see an overview of the current proposals
> surrounding table summaries.

I created the table because I am frustrated by the narrow focus on 
non-visual table summaries. 

Below are some of the issues I document in the table (as I read the 
proposals). Of course, anyone of the authors can change their proposals 
to repair suboptimal issues.

* The HTML5 draft seems alone in forbidding use of @summary.

* The following proposals consider the <caption> as containing the 
table identification string (no surprises so far - I admit), but leave 
it to heuristics to separate the table identification string from the 
rest of the content of the caption element (which could include block 
level content): 
	1) The HTML5 draft 
	2) Laura’s proposal
    3) Gregory’s proposal excepts <summary> from the table
       identification string - but has no solution for separating
       other non-caption info from the table identification string
    4) Cynthia’s excepts <details> but is otherwise like Gregory’s

* These proposals either treat the entire <caption> element as a table 
identification string container, or they require that any other 
material that shouldn’t be treated as the table identification string, 
goes into a specific element inside the <caption> element:
	1) HTML4
	2) WCAG2 H39 and WCAG H73
	3) Leif’s proposal

* These proposals allow (or do not forbid) non-visual media related 
table summaries directly in the caption - where they must be separated 
from the caption's other content entirely via heuristics:
	1) The HTML5 draft 
	2) Laura’s proposal

* These proposals allow non-visual media related table summaries inside 
(by default) all media related table information elements:
	1) Cynthia’s proposal
	2) Leif’s proposal

* Only Gregory allows a specific non-visual media related table summary 
element directly in the <caption>. (But as told above, he doesn't 
forbid other table info to be placed outside <summary>.)
leif halvard silli
Received on Friday, 5 March 2010 17:13:31 UTC

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