Index: src/work/alpar/list_graph_demo.cc
===================================================================
--- src/work/alpar/list_graph_demo.cc	(revision 401)
+++ src/work/alpar/list_graph_demo.cc	(revision 426)
@@ -120,4 +120,7 @@
 		<< " sm=" << sm[e] << "\n";
     
+    //Delete all nodes
+    NodeIt n;
+    while(G.valid(G.first(n))) G.erase(n);
   }