updated to use named parameters

[SVN r9946]

doc/kevin_bacon.html

@@ -248,11 +248,14 @@ predecessors, since this is not part of the basic algorithm.
 <PRE>
     Vertex src = actors["Kevin Bacon"];
     
-    dijkstra_shortest_paths
-      (g, src, bacon_number.begin(),
-       get(edge_weight, g), color.begin(), get(vertex_index, g),
-       make_ucs_visitor(record_predecessors(predecessor.begin(), 
-                                            on_edge_relaxed())));
+    breadth_first_search
+      (g, src, 
+       visitor(make_bfs_visitor
+	       (make_list(record_predecessors(&amp;predecessor[0], 
+					      on_examine_edge()),
+			  record_distances(&amp;bacon_number[0],
+					   on_examine_edge()))))
+       );
 </PRE>
 
 <P>