diff --git a/include/boost/preprocessor/slot.hpp b/include/boost/preprocessor/slot.hpp
new file mode 100644
index 0000000..1cad6e6
--- /dev/null
+++ b/include/boost/preprocessor/slot.hpp
@@ -0,0 +1,21 @@
+# ifndef BOOST_PREPROCESSOR_SLOT_HPP
+# define BOOST_PREPROCESSOR_SLOT_HPP
+#
+# /* **************************************************************************
+#  *                                                                          *
+#  *     (C) Copyright Paul Mensonides 2002.  Permission to copy, use,        *
+#  *     modify, sell, and distribute this software is granted provided       *
+#  *     this copyright notice appears in all copies.  This software is       *
+#  *     provided "as is" without express or implied warranty, and with       *
+#  *     no claim at to its suitability for any purpose.                      *
+#  *                                                                          *
+#  ************************************************************************** */
+#
+# include <boost/preprocessor/detail/cat.hpp>
+#
+# define BOOST_PP_SLOT_LIMIT 5
+#
+# define BOOST_PP_ASSIGN_SLOT(i) BOOST_PP_DETAIL_CAT4(<boost/preprocessor/detail/slot/slot, i, ., hpp>)
+# define BOOST_PP_SLOT(i) BOOST_PP_DETAIL_CAT2(BOOST_PP_SLOT_, i)
+#
+# endif