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Re: Differences between xhtml basic and other versions of xhtml (in terms of accessibility)

From: Johannes Koch <johannes.koch@fit.fraunhofer.de>
Date: Mon, 15 Aug 2005 10:48:40 +0200
Message-ID: <430056E8.6040208@fit.fraunhofer.de>
To: public-wai-ert@w3.org

Hi Vicente

Vicente Luque Centeno wrote:

> * Nested tables are forbidden in XHTML Basic (though you can easily find 
> a tricky way for validation).

Yes, by using a table within a block-level element like div inside a 
table cell element.  At least, the prohibition is mentioned in 1.3.5 of 
XHTML Basic 1.0, though not in a normative section.

> * Nested focusable elements are forbidden in XHTML Basic. You can't have 
> a "label" tag inside an "a" tag, for instance. I think this is good, in 
> order to avoid ambiguity when focusing elements. XHTML Basic clearly 
> forbids this

Where? I cannot see this mentioned in the XHTML Basic 1.0 specification.

XHTML Modularization specifies the content type of a as
   (PCDATA | Inline - a)*
and the DTD module _does_ accept label as child of a.

XHTML Modularization specifies the content type of label as
   (PCDATA | Inline - label)*
and the DTD module does not accept a as child of label, however, as you 
know, it cannot prohibit a grandchildren of label by means of XML DTD.

The prohibition of label within label and a within a already listed in 
XHTML 1.0 (<http://www.w3.org/TR/xhtml1/#prohibitions>).

Johannes Koch - Competence Center BIKA
Fraunhofer Institute for Applied Information Technology (FIT.LIFE)
Schloss Birlinghoven, D-53757 Sankt Augustin, Germany
Phone: +49-2241-142628
Received on Monday, 15 August 2005 08:48:54 UTC

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