<?xml version="1.0" ?>

<a xmlns="http://www.omegahat.org"
   xmlns:omegahat="http://www.omegahat.org"
   xmlns:r="http://www.r-project.org">
  <r:b omegahat:foo="myValue">
    <defaultNs/>
    <c:c xmlns:c="http://www.c.org"/>
  </r:b>
</a>
