RE: Possible small RDDL enhancement

[Jonathan Borden <jborden@mediaone.net>]

Tim Bray wrote:

> It dawns on me that it might be useful for a RDDL to declare
> what namespace or mime-type it claims to be describing.

For a single namespace xml:base (on the html element) does the trick.

> Would
> it make sense to create a new optional element type, <rddl:class>,
> with attributes ns= and/or media-type=, which could be used for
> this purpose?  I was thinking of using attributes, but sometimes
> a rddl might be used to describe more than one class of documents.

This is getting into more like an RDF Schema with an about='uri'. The RDF
Schema vocabulary itself is fairly simple (5 or so elements).
>
> *If* this is a good idea, the element might as well go in
> <html:head>, right?  -Tim
>
>

Or in the body (so you can list the namespaces being described for example).
I had played around with something like this to see how complicated it might
be. I am not sure if it is useful but:
http://www.rddl.org/tddl is a RDDL description of a "Terminology Definition
and Description Language" and http://www.rddl.org/tddl-tddl is the same
language described in TDDL. Rather than an ID you could use a <tddl:Class
about="ns.."/> construct and multiple ones if desired.

To be clear, these documents are _not_ part of RDDL, are experimental and
are for discussion only.

-Jonathan