Index: src/work/alpar/list_graph.h
===================================================================
--- src/work/alpar/list_graph.h	(revision 401)
+++ src/work/alpar/list_graph.h	(revision 404)
@@ -1127,4 +1127,10 @@
   /// each other.
   ///
+  ///\warning Adding or deleting nodes from the graph is not safe if an
+  ///\ref EdgeSet is currently attached to it!
+  ///
+  ///\todo Make it possible to add/delete edges from the base graph
+  ///(and from \ref EdgeSet, as well)
+  ///
   ///\param GG The type of the graph which shares its node set with this class.
   ///Its interface must conform with \ref GraphSkeleton.