Canonical URL for Relax-NG schemas

Hi Norm, everybody,

 Since there starts to be some momentum toward using Relax-NG for
DocBook validation is there a (set of ?) canonical URL for example
on docbook.org to reference DocBook RNG schemas from a catalog ?

Daniel

-- 
Daniel Veillard      | Red Hat Network https://rhn.redhat.com/
  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/