-<!ELEMENT AS (((AS|include|storage_type|storage|link|cluster|peer|trace|trace_connect)*,(ASroute|trace|trace_connect|bypassASroute)*,(trace|trace_connect)*)|((include|storage_type|storage|host|router|link|trace|trace_connect)*,(route|trace|trace_connect|bypassRoute)*))>
+<!ELEMENT AS (((AS|include|storage_type|storage|link|backbone|cluster|peer|trace|trace_connect)*,(ASroute|trace|trace_connect|bypassASroute)*,(trace|trace_connect)*)|((include|storage_type|storage|host|router|link|backbone|trace|trace_connect|host_link)*,(route|trace|trace_connect|bypassRoute)*))>
<!ATTLIST AS id CDATA #REQUIRED>
<!ATTLIST AS id CDATA #REQUIRED>
-<!ATTLIST AS routing CDATA #REQUIRED>
+<!ATTLIST AS routing (Full|Floyd|Dijkstra|DijkstraCache|None|RuleBased|Vivaldi|Cluster) "None">