- From: Jason White <jasonw@ariel.its.unimelb.edu.au>
- Date: Fri, 12 Nov 2004 15:58:36 +1100
- To: Lisa Seeman <lisa@ubaccess.com>
- Cc: Will Pearson <will-pearson@tiscali.co.uk>, wai-xtech@w3.org
First a terminological note: it isn't a tag, it is an element. "Tag" refers to a start-tag, and end-tag or an "empty element" tag in XML, but not to the whole element. Lisa Seeman writes: > > ----- Whilst the semantics of the role are conveyed by the proposed tag, I don't see how it covers other encoding channels such as spatial relationships. For example, there could be an advertising image to the left of a block of text. The semantic meaning conveyed by this relationship may be that the image is an advertisement for the text content, ie. a picture of a product and some blurb about that product next to it. In this case the relationship to be encoded is not spatial, even though it can be presented spatially. Rather, it is the two-place predicate "is an advertisement for", as in "x is an advertisement for y", where x is an image with a text equivalent, and y is an advertisement. RDF can be used to express such relationships; it is not the purpose of the proposed ROLE element to do so.
Received on Friday, 12 November 2004 04:58:53 UTC