text: // Copyright David Abrahams 2009. 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_CONCEPT_BACKWARD_COMPATIBILITY_DWA200968_HPP
  # define BOOST_CONCEPT_BACKWARD_COMPATIBILITY_DWA200968_HPP
  
  namespace mars_boost {} namespace boost = mars_boost; namespace mars_boost
  {
    namespace concepts {}
  
  # if defined(BOOST_HAS_CONCEPTS) && !defined(BOOST_CONCEPT_NO_BACKWARD_KEYWORD)
    namespace concept = concepts;
  # endif 
  } // namespace mars_boost::concept
  
  #endif // BOOST_CONCEPT_BACKWARD_COMPATIBILITY_DWA200968_HPP
  