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diff --git a/boost/container/options.hpp b/boost/container/options.hpp
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+/////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga  2013-2013
+//
+// 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)
+//
+// See http://www.boost.org/libs/container for documentation.
+//
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_CONTAINER_OPTIONS_HPP
+#define BOOST_CONTAINER_OPTIONS_HPP
+
+#if defined(_MSC_VER)
+#  pragma once
+#endif
+
+#include <boost/container/detail/config_begin.hpp>
+#include <boost/container/container_fwd.hpp>
+#include <boost/intrusive/pack_options.hpp>
+
+namespace boost {
+namespace container {
+
+#if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
+
+template<tree_type_enum TreeType, bool OptimizeSize>
+struct tree_opt
+{
+   static const boost::container::tree_type_enum tree_type = TreeType;
+   static const bool optimize_size = OptimizeSize;
+};
+
+#endif   //!defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
+
+//!This option setter specifies the underlying tree type
+//!(red-black, AVL, Scapegoat or Splay) for ordered associative containers
+BOOST_INTRUSIVE_OPTION_CONSTANT(tree_type, tree_type_enum, TreeType, tree_type)
+
+//!This option setter specifies if node size is optimized
+//!storing rebalancing data masked into pointers for ordered associative containers
+BOOST_INTRUSIVE_OPTION_CONSTANT(optimize_size, bool, Enabled, optimize_size)
+
+//! Helper metafunction to combine options into a single type to be used
+//! by \c boost::container::set, \c boost::container::multiset
+//! \c boost::container::map and \c boost::container::multimap.
+//! Supported options are: \c boost::container::optimize_size and \c boost::container::tree_type
+#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED) || defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
+template<class ...Options>
+#else
+template<class O1 = void, class O2 = void, class O3 = void, class O4 = void>
+#endif
+struct tree_assoc_options
+{
+   /// @cond
+   typedef typename ::boost::intrusive::pack_options
+      < tree_assoc_defaults,
+      #if !defined(BOOST_CONTAINER_VARIADIC_TEMPLATES)
+      O1, O2, O3, O4
+      #else
+      Options...
+      #endif
+      >::type packed_options;
+   typedef tree_opt<packed_options::tree_type, packed_options::optimize_size> implementation_defined;
+   /// @endcond
+   typedef implementation_defined type;
+};
+
+}  //namespace container {
+}  //namespace boost {
+
+#include <boost/container/detail/config_end.hpp>
+
+#endif   //#ifndef BOOST_CONTAINER_OPTIONS_HPP