<xs:element name="pages">
  <xs:sequence>
    <xs:element ref="page"/>
  </xs:sequence>
  <xs:attribute name="name" use="required">
    <xs:simpleType>
      <xs:restriction base="xs:string">
        <xs:enumeration value="Pages"/>
      </xs:restriction>
    </xs:simpleType>
  </xs:attribute>
</xs:element>