Using two link values gives the link two relations, not one.
Yes, but don't both relationships apply to the one resource, so their semantics are combined?
Not as I understand it. For example, a resource could be both the 'prev' document and the 'index'. What would be the combined semantics of |rel="index prev"| or |rel="prev index"|...
-- Anne van Kesteren <http://annevankesteren.nl/>