- From: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>
- Date: Sat, 14 Aug 2010 04:58:28 +0200
- To: public-rdfa-wg@w3.org
There is a debate in the HTMLwg about the longdesc attribute. And in that debate, the thought has surfaced that @longdesc, <img src="*" longdesc="long.html" alt="short description" /> is simply a *shorthand notation* for this (hypothetical) micro format <a href="long.html" rel="longdesc"> <img src="*" alt="short description" /> </a> This has resulted in an attempt to register the 'longdesc' as link relation. [1] Simultaneously, a search for a better documentation of implementations of @longdesc has been (re)started. And in that context, I raised a question about RDFa and @longdesc. [2] Observation 1: The XHTML+RDFa DOCTYPE supports the @longdesc attribute. Observation 2: Mark Birbeck states in his 'Introduction to RDFa' article that «The @rel and @href attributes are no longer confined to the a and link elements, but can also be used on img to indicate a relationship between the image and some other item.» [3] Observation 3: A longdesc link indicates a relation between a short description and a long description. (See the quotes from HTML4 provided in [1]: 'link to long description (complements alt)' and 'link to long description (complements title)'.) Questions: Would it not be logical if RDFa treated the @longdesc link as a semantic link - e.g. equivalent to the micro format I described above? What needs to be added in order to make this happen? [1] http://www.ietf.org/mail-archive/web/link-relations/current/msg00047.html [2] http://lists.w3.org/Archives/Public/public-html/2010Aug/0140 [3] http://www.alistapart.com/articles/introduction-to-rdfa/ -- leif halvard silli
Received on Saturday, 14 August 2010 02:59:02 UTC