Issue: adding a shortcut for grammar-level inclusion

The current grammar-level inclusion proposal allows us to write:

<externalRef href="XHTML.rng">
  <start>
    <ref name="div"/>
  </start>
</externalRef>

I believe this kind of simple references is quite common.
For this purpose, I'd like to propose an optional attribute "name" for
the <externalRef> element.


By using this attribute, the above pattern can be simply written as:

<externalRef href="XHTML.rng" name="div"/>


Also, this makes <externalRef> look closer to <ref>.

--
Kohsuke KAWAGUCHI                          +1 650 786 0721
Sun Microsystems