&reftitle.constants; &extension.constants; YAF_VERSION (string) YAF_ENVIRON (string) YAF_ERR_STARTUP_FAILED (int) YAF_ERR_ROUTE_FAILED (int) YAF_ERR_DISPATCH_FAILED (int) YAF_ERR_AUTOLOAD_FAILED (int) YAF_ERR_NOTFOUND_MODULE (int) YAF_ERR_NOTFOUND_CONTROLLER (int) YAF_ERR_NOTFOUND_ACTION (int) YAF_ERR_NOTFOUND_VIEW (int) YAF_ERR_CALL_FAILED (int) YAF_ERR_TYPE_ERROR (int)