<?xml version="1.0"?>
<rules startMode="book"
       xmlns="http://purl.oclc.org/dsdl/nvdl/ns/structure/1.0">
   <trigger ns="http://www.book.org"
            nameList="Publisher" />
   <mode name="book">
       <namespace ns="http://www.books.org">
           <validate schema="Book.rng"
                     useMode="publisher" />
       </namespace>
   </mode>
   <mode name="publisher">
       <namespace ns="http://www.books.org">
           <validate schema="Publisher.xsd"/>
           <attach />
       </namespace>
   </mode>
</rules>
