-const char *res_get_prefix (Res r, const char *name, const char *prefix,
- const char *def);
+int res_trav(Res r, const char *prefix, void *p,
+ void (*f)(void *p, const char *name, const char *value));
+
+YAZ_EXPORT
+const char *res_get_prefix(Res r, const char *name, const char *prefix,
+ const char *def);