<?xml version="1.0" encoding="UTF-8"?>
<rules xmlns="http://purl.oclc.org/dsdl/nvdl/ns/structure/1.0" 
       startMode="example">
     <mode name="example">
         <namespace ns="http://www.example.org">
             <validate schema="Document.xsd" useMode="content"/>
             <validate schema="rules.sch">
                 <mode>
                     <anyNamespace>
                         <attach/>
                     </anyNamespace>
                 </mode>
             </validate>
         </namespace>
     </mode>
     <mode name="content">
         <namespace ns="http://www.book.org">
             <validate schema="book.xsd"/>
         </namespace>
         <namespace ns="http://www.chinese.org">
             <validate schema="chinese.xsd"/>
         </namespace>
     </mode>
</rules>