diff -r d91884dcd572 -r 47fbc814aa31 demo/lgf_demo.cc
--- a/demo/lgf_demo.cc	Mon Sep 29 12:34:08 2008 +0200
+++ b/demo/lgf_demo.cc	Wed Oct 01 12:44:16 2008 +0200
@@ -44,7 +44,7 @@
   SmartDigraph::Node s, t;
 
   try {
-    digraphReader("digraph.lgf", g). // read the directed graph into g
+    digraphReader(g, "digraph.lgf"). // read the directed graph into g
       arcMap("capacity", cap).       // read the 'capacity' arc map into cap
       node("source", s).             // read 'source' node to s
       node("target", t).             // read 'target' node to t
@@ -60,7 +60,7 @@
 
   std::cout << "We can write it to the standard output:" << std::endl;
 
-  digraphWriter(std::cout, g).     // write g to the standard output
+  digraphWriter(g).                // write g to the standard output
     arcMap("capacity", cap).       // write cap into 'capacity'
     node("source", s).             // write s to 'source'
     node("target", t).             // write t to 'target'