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diff --git a/boost/fusion/algorithm/transformation/flatten.hpp b/boost/fusion/algorithm/transformation/flatten.hpp
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+++ b/boost/fusion/algorithm/transformation/flatten.hpp
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+/*//////////////////////////////////////////////////////////////////////////////
+    Copyright (c) 2013 Jamboree
+
+    Distributed under the Boost Software License, Version 1.0. (See accompanying
+    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//////////////////////////////////////////////////////////////////////////////*/
+#ifndef BOOST_FUSION_ALGORITHM_FLATTEN_HPP_INCLUDED
+#define BOOST_FUSION_ALGORITHM_FLATTEN_HPP_INCLUDED
+
+
+#include <boost/fusion/view/flatten_view.hpp>
+#include <boost/fusion/support/is_sequence.hpp>
+#include <boost/utility/enable_if.hpp>
+
+
+namespace boost { namespace fusion { namespace result_of
+{
+    template<typename Sequence>
+    struct flatten
+    {
+        typedef flatten_view<Sequence> type;
+    };
+}}}
+
+namespace boost { namespace fusion
+{
+    template <typename Sequence>
+    inline typename result_of::flatten<Sequence>::type
+    flatten(Sequence& view)
+    {
+        return flatten_view<Sequence>(view);
+    }
+    
+    template <typename Sequence>
+    inline typename result_of::flatten<Sequence const>::type
+    flatten(Sequence const& view)
+    {
+        return flatten_view<Sequence const>(view);
+    }
+}}
+
+
+#endif
+