New scenario to see details of reaction on congestion. Small change in AnnotatedTopologyReader API
diff --git a/model/annotated-topology-reader.h b/model/annotated-topology-reader.h
index 91e6d26..95ce123 100644
--- a/model/annotated-topology-reader.h
+++ b/model/annotated-topology-reader.h
@@ -102,6 +102,12 @@
    */
   void ApplyOspfMetric ();
 
+  /**
+   * \brief Save positions (e.g., after manual modification using visualizer)
+   */
+  void
+  SavePositions (const std::string &file) const;
+
 protected:
   Ptr<Node>
   CreateNode (const std::string name);