diff --git a/doc/namespaces.dox b/doc/namespaces.dox
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+/* -*- C++ -*-
+ *
+ * This file is a part of LEMON, a generic C++ optimization library
+ *
+ * Copyright (C) 2003-2008
+ * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
+ * (Egervary Research Group on Combinatorial Optimization, EGRES).
+ *
+ * Permission to use, modify and distribute this software is granted
+ * provided that this copyright notice appears in all copies. For
+ * precise terms see the accompanying LICENSE file.
+ *
+ * This software is provided "AS IS" with no warranty of any kind,
+ * express or implied, and with no claim as to its suitability for any
+ * purpose.
+ *
+ */
+
+/// The namespace of LEMON
+
+/// The namespace of LEMON
+///
+namespace lemon {
+
+  /// The namespace of LEMON concepts and concept checking classes
+
+  /// The namespace of LEMON concepts and concept checking classes
+  ///
+  namespace concepts {}
+}