| 1234567891011121314151617181920212223 | // Copyright Cromwell D. Enage 2017.// 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_PARAMETER_KEYWORD_FWD_HPP#define BOOST_PARAMETER_KEYWORD_FWD_HPPnamespace boost { namespace parameter {    struct in_reference;    struct out_reference;    typedef ::boost::parameter::out_reference in_out_reference;    struct forward_reference;    struct consume_reference;    typedef ::boost::parameter::consume_reference move_from_reference;    template <typename Tag>    struct keyword;}} // namespace boost::parameter#endif  // include guard
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