Questions about the testCaseDescription tag

Hi

A few simple questions / clarifications on the testCaseDescription tag:
<testCaseDescription id=""
xml:lang="en"
xmlns="http://bentoweb.org/refs/TCDL2.0/"
xmlns:btw="http://bentoweb.org/refs/TCDL2.0/"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:html="http://www.w3.org/1999/xhtml"
xmlns:earl="http://www.w3.org/WAI/ER/EARL/nmg-strawman#"
xsi:schemaLocation="http://bentoweb.org/refs/TCDL2.0/
http://bentoweb.org/refs/schemas/tcdl2.0.xsd
http://purl.org/dc/elements/1.1/
http://dublincore.org/schemas/xmls/qdc/2006/01/06/dc.xsd
http://www.w3.org/1999/xhtml
http://www.w3.org/2004/07/xhtml/xhtml1-strict.xsd
http://www.w3.org/1999/xlink http://bentoweb.org/refs/schemas/xlink.xsd"
>

Is there a pattern an author should follow when creating an id for our
purposes in this work group?

Currently the schema for TCDL exist at a BenToWeb address. Will this change
to a W3C address once we have hammered out an acceptable product? I am
assuming that there will be a W3C version of TCDL when we are finished.

Shane
WebAIM.org