- From: poot <cvsmail@w3.org>
- Date: 2011年4月13日 21:01:09 -0400
- To: public-html-diffs@w3.org
- Message-Id: <E1QAAvl-0006Kr-9h@jay.w3.org>
hixie: apply wg decision (whatwg r6006) http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.4828&r2=1.4829&f=h http://html5.org/tools/web-apps-tracker?from=6005&to=6006 =================================================================== RCS file: /sources/public/html5/spec/Overview.html,v retrieving revision 1.4828 retrieving revision 1.4829 diff -u -d -r1.4828 -r1.4829 --- Overview.html 14 Apr 2011 00:40:01 -0000 1.4828 +++ Overview.html 14 Apr 2011 00:58:20 -0000 1.4829 @@ -26394,22 +26394,23 @@ <p>The <code><a href="#the-table-element">table</a></code> element takes part in the <a href="#table-model">table model</a>.</p> - </div><p>Tables must not be used as layout aids. Historically, some Web - authors have misused tables in HTML as a way to control their page - layout. This usage is non-conforming, because tools attempting to - extract tabular data from such documents would obtain very confusing - results. In particular, users of accessibility tools like screen - readers are likely to find it very difficult to navigate pages with - tables used for layout.<p class="note">There are a variety of alternatives to using HTML - tables for layout, primarily using CSS positioning and the CSS table - model.<div class="impl"> + </div><p>Tables should not be used as layout aids. - <p>User agents that do table analysis on arbitrary content are - encouraged to find heuristics to determine which tables actually - contain data and which are merely being used for layout. This - specification does not define a precise heuristic.</p> + Historically, many Web authors have tables in HTML as a way to + control their page layout making it difficult to extract tabular + data from such documents. - </div><p>Tables have rows, columns, and cells given by their descendants. + In particular, users of accessibility tools, like screen readers, + are likely to find it very difficult to navigate pages with tables + used for layout. + + If a table is to be used for layout it must be marked with the + attribute role="presentation" for a user agent to properly represent + the table to an assistive technology and to properly convey the + intent of the author to tools that wish to extract tabular data from + the document.</p><p class="note">There are a variety of alternatives to using HTML + tables for layout, primarily using CSS positioning and the CSS table + model.<p>Tables have rows, columns, and cells given by their descendants. The rows and columns form a grid; a table's cells must completely cover that grid without overlap.<div class="impl"> <p class="note">Precise rules for determining whether this
Received on Thursday, 14 April 2011 01:01:14 UTC