<!ELEMENT siteRelationship (node+)>
<!ATTLIST siteRelationship title CDATA #REQUIRED>
<!ELEMENT node (linkList?)>
<!ATTLIST node title CDATA #REQUIRED>
<!ATTLIST node nodeID ID #REQUIRED>
<!ATTLIST node url CDATA #REQUIRED>
<!ELEMENT linkList (link+)>
<!ELEMENT link EMPTY>
<!ATTLIST link id IDREF #REQUIRED>
<!ATTLIST link text CDATA #REQUIRED>