Julian Reschke wrote: > If recipients need to change, then you have introduced a new > notation/syntax/whateveryouwannacallit.
Recipients only need to change if they lent @rel a syntax/meaning/whateveryouwannacallit beyond the spec. If you assumed @rel in HTML or XHTML was a URI, you went beyond the spec. RDFa specifically ensured that existing *specified* interpretations of @rel were preserved, i.e. link types. And RDFa specifically ensured that the list of link types could be extended in the future without interfering with our use of @rel including prefixed values which, according to the spec, you should have simply ignored as local values. I think that's what Steven means when he says we added a way to interpret the @rel syntax without actually changing it, because there *no* syntax specified other than CDATA. -Ben
