Re: rel=CURIE in RDFa, but rel=URI in Link:

Anne van Kesteren wrote:
>> HTML5, as currently drafted, already allows URIs in link/@rel to the 
>> same extent @xmlns takes a URI. That is, using a URI as a rel token is 
>> allowed (if the extension designer registers it on the wiki), but the 
>> token is compared as a string--not as a URI.
> 
> Also, note that such tokens (e.g. stylesheet) are compared in an ASCII 
> case-insensitive manner.

...where does it say that? And what does that imply for the comparison 
of relation names that contain non-ASCII characters?

BR, Julian