1  <x xmlns:xinclude="http://www.w3.org/2001/XInclude">
2     <!-- Simple test of a fallback on unavailble URI -->
3     <xinclude:include href="something.xml">
4       <xinclude:fallback><warning>Inclusion failed</warning></xinclude:fallback>
5     </xinclude:include>
6  </x>