-extern void_f_void_t STag_graph_fun;
-extern void_f_void_t ETag_graph_fun;
-extern void_f_void_t STag_node_fun;
-extern void_f_void_t ETag_node_fun;
-extern void_f_void_t STag_edge_fun;
-extern void_f_void_t ETag_edge_fun;
+extern void_f_void_t STag_graphxml_graph_fun;
+extern void_f_void_t ETag_graphxml_graph_fun;
+extern void_f_void_t STag_graphxml_node_fun;
+extern void_f_void_t ETag_graphxml_node_fun;
+extern void_f_void_t STag_graphxml_edge_fun;
+extern void_f_void_t ETag_graphxml_edge_fun;