   </span><span class=keyword>typedef </span><span class=identifier>DerivedT                embed_t</span><span class=special>;
        </span><span class=keyword>typedef </span><span class=identifier>DerivedT                derived_t</span><span class=special>;
        </span><span class=keyword>typedef </span><span class=identifier>plain_parser_category   parser_category_t</span><span class=special>;

        </span><span class=keyword>template </span><span class=special>&lt;</span><span class="keyword">t