Here's some use cases and examples of how a subset of XBL2 is used to
define components in XForms.
We'd like to be able to support this type of work. We expect it would
be done as part of a JavaScript or server-side process, and so we just
need the language to be able to express the namespaced markup
operations, and don't need to see the resulting tree in the shadow DOM.
Form author's guide to using Orbeon's existing XBL components:
http://wiki.orbeon.com/forms/doc/developer-guide/xbl-components
Writing and using XBL Components in Orbeon's XForms implementation
http://wiki.orbeon.com/forms/doc/developer-guide/xbl-components-guide
Leigh.