<?xml version="1.0"?>
<rules xmlns="http://purl.oclc.org/dsdl/nvdl/ns/structure/1.0"
       startMode="document">
     <mode name="document">
         <namespace ns="http://www.document.org">
             <validate schema="Document.xsd"
                       useMode="para" />
         </namespace>
     </mode>
     <mode name="para">
         <namespace ns="http://www.para.org">
             <validate schema="Para.rng" />
         </namespace>
         <namespace ns="http://www.classification.org" match="attributes">
            <validate schema="Classification.xsd" />
         </namespace>
     </mode>
</rules>