+const char *res_get_prefix(Res r, const char *name, const char *prefix,
+ const char *def);
+
+YAZ_EXPORT
+ZEBRA_RES res_get_int(Res r, const char *name, int *val);
+
+
+/* == pop ================================================================= */
+
+YAZ_EXPORT
+Res res_add_over (Res p, Res t);
+
+YAZ_EXPORT
+void res_remove_over (Res r);
+
+YAZ_EXPORT
+void res_close_over (Res r);
+
+YAZ_EXPORT
+void res_add (Res r, const char *name, const char *value);
+
+YAZ_EXPORT
+char **res_2_array (Res r);
+
+YAZ_EXPORT
+char **res_get_array(Res r, const char* name);