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diff --git a/src/boost/libs/bimap/example/unconstrained_collection.cpp b/src/boost/libs/bimap/example/unconstrained_collection.cpp
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+// Boost.Bimap
+//
+// Copyright (c) 2006-2007 Matias Capeletto
+//
+// 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)
+
+//  VC++ 8.0 warns on usage of certain Standard Library and API functions that
+//  can be cause buffer overruns or other possible security issues if misused.
+//  See https://web.archive.org/web/20071014014301/http://msdn.microsoft.com/msdnmag/issues/05/05/SafeCandC/default.aspx
+//  But the wording of the warning is misleading and unsettling, there are no
+//  portable alternative functions, and VC++ 8.0's own libraries use the
+//  functions in question. So turn off the warnings.
+#define _CRT_SECURE_NO_DEPRECATE
+#define _SCL_SECURE_NO_DEPRECATE
+
+// Boost.Bimap Example
+//-----------------------------------------------------------------------------
+
+#include <boost/config.hpp>
+
+#include <string>
+#include <iostream>
+
+#include <map>
+#include <boost/bimap/bimap.hpp>
+#include <boost/bimap/unconstrained_set_of.hpp>
+#include <boost/bimap/support/lambda.hpp>
+
+using namespace boost::bimaps;
+
+int main()
+{
+    // Boost.Bimap
+    {
+    //[ code_unconstrained_collection_bimap
+
+    typedef bimap< std::string, unconstrained_set_of<int> > bm_type;
+    typedef bm_type::left_map map_type;
+
+    bm_type bm;
+    map_type & m = bm.left;
+    //]
+
+    //[ code_unconstrained_collection_common
+
+    m["one"] = 1;
+
+    assert( m.find("one") != m.end() );
+
+    for( map_type::iterator i = m.begin(), iend = m.end(); i != iend; ++i )
+    {
+        /*<< The right collection of the bimap is mutable so its elements 
+             can be modified using iterators. >>*/
+        ++(i->second);
+    }
+
+    m.erase("one");
+    //]
+
+    m["one"] = 1;
+    m["two"] = 2;
+
+    //[ code_unconstrained_collection_only_for_bimap
+    typedef map_type::const_iterator const_iterator;
+    typedef std::pair<const_iterator,const_iterator> const_range;
+
+    /*<< This range is a model of BidirectionalRange, read the docs of 
+         Boost.Range for more information. >>*/
+    const_range r = m.range( "one" <= _key, _key <= "two" );
+    for( const_iterator i = r.first; i != r.second; ++i )
+    {
+        std::cout << i->first << "-->" << i->second << std::endl;
+    }
+
+    m.modify_key( m.begin(), _key = "1" );
+    //]
+    }
+
+    // Standard map
+    {
+    //[ code_unconstrained_collection_map
+
+    typedef std::map< std::string, int > map_type;
+
+    map_type m;
+    //]
+    }
+
+    return 0;
+}
+
+