Quoting Oskar Welzl <lists@welzl.info>:
> BTW: My personal history of teaching in computer classes tells me that
> people map the content of the address bar in their browsers to
> documents. They know this concept from browsing drive C:. The idea of
> URIs that might return anything depending on the context and a dozen
> hidden parameters is not particularly user friendly and should be well
> hidden.

Exactly, I believe I raised an issue about this somewhere in 2004 
against XHTML
2.0 (not yet addressed). The new proposal "encourages" people to link like:

<a href="doc" hreflang="sk">

... instead of:

<a href="doc.sk" hreflang="sk">

... or:

<a href="../sk/doc" hreflang="sk">

... which would make the end result bookmarkable. (And you can exchange 
it with
someone else.) It also breaks with the idea that many people have about
"hreflang". That it is merely metadata. It is also used as such. Changing the
"Accept-Language" header of the user does not really help anyone.


-- 
Anne van Kesteren
<http://annevankesteren.nl/ >