/**\defgroup externals External objects referenced from within SENF */
///\addtogroup externals
//\{
namespace boost { class array {}; }
namespace boost { class base_from_member {}; }
namespace boost { class enable_if {}; }
namespace boost { class equality_comparable {}; }
namespace boost { class false_type {}; }
namespace boost { class iterator_facade {}; }
namespace boost { class noncopyable {}; }
namespace boost { class singleton_pool {}; }
namespace boost { class totally_ordered {}; }
namespace boost { class true_type {}; }
namespace boost { class enable_shared_from_this {}; }
namespace boost { namespace spirit { class grammar {}; } }
namespace boost { namespace spirit { class grammar_def {}; } }
namespace boost { namespace iostreams { class sink {}; } }
namespace std { class exception {}; }
namespace std { class string {}; }
//\}