Finding the target of a RDDL document

Sorry to ask such a trivial question, but if I read a RDDL document, how 
can I find its target?

For instance, how can I tell that http://www.openhealth.org/RDDL/ is 
describing the http://www.rddl.org/ namespace?

This is pretty clear if I am an English speaking human user, but 
shouldn't it made clear for programs as well?

I like RDDL a lot, but I am wondering if it's not misusing simple XLink 
here since after http://www.rddl.org/ has been redirected to 
http://www.openhealth.org/RDDL/ , my understanding is that when I read:

<rddl:resource xlink:type="simple"
         xlink:title="RDDL Natures"
         xlink:role="http://www.rddl.org/"
         xlink:arcrole="http://www.rddl.org/purposes#directory"
         xlink:href="http://www.rddl.org/natures"
 >
<div class="resource">
<p>It is anticipated that many related-resource natures will be well known.
         A list of well-known natures may be found in the RDDL directory
         <a 
href="http://www.rddl.org/natures">http://www.rddl.org/natures</a>.</p>
</div>
</rddl:resource>

this is describing a link between the rddl:resource element of the 
http://www.openhealth.org/RDDL/ XML document and the document 
http://www.rddl.org/natures rather than a link between 
http://www.rddl.org/ and http://www.rddl.org/natures.

We could workaround this by adding a new element (rddl:target for 
instance) to indicate the target namespace but it would still be a nasty 
hack IMO.

This seems like a useful thing to do anyway since the meaning of a RDDL 
document shouldn't change just because I am using a local copy on my disk...

Or have I missed something?

Thanks

Eric
-- 
See you in Paris.
                      http://www.afnet.fr/afnet/net200x/programme.html#T9
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Eric van der Vlist       http://xmlfr.org            http://dyomedea.com
http://xsltunit.org      http://4xt.org           http://examplotron.org
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