New editors' draft

I have hacked on John's draft quite extensively.  There's a new version at:

http://www.w3.org/community/microxml/wiki/Editor%27s_Draft

There are some formatting glitches due to embedding HTML in the wiki.
 Don't worry about them: they will disappear when we move it out of the
wiki.

Comments are welcome.

Feel free to fix typos yourself (and be sure to fill in the Summary field
summarizing your change), but please leave substantive changes to me and
John.

James