--- /dev/null
+/*
+ * @copyright Copyright (c) 2019-2020 TOYOTA MOTOR CORPORATION.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file env_ext.h
+ * @brief \~english Define of supplier vehicle parameter environment variable.
+ */
+
+#ifndef VEHICLE_PARAMETER_LIBRARY_LIBRARY_INCLUDE_OTHER_SERVICE_ENV_EXT_H_
+#define VEHICLE_PARAMETER_LIBRARY_LIBRARY_INCLUDE_OTHER_SERVICE_ENV_EXT_H_
+
+/** @addtogroup BaseSystem
+ * @{
+ */
+/** @addtogroup other_service
+ * @ingroup BaseSystem
+ * @{
+ */
+/** @addtogroup vehicle_parameter_library
+ * @ingroup other_service
+ * @{
+ */
+
+//
+// Please describe supplier-specific definitions of the vehicle parameters.
+//
+
+/** @}*/ // end of vehicle_parameter_library
+/** @}*/ // end of other_service
+/** @}*/ // end of BaseSystem
+
+#endif // VEHICLE_PARAMETER_LIBRARY_LIBRARY_INCLUDE_OTHER_SERVICE_ENV_EXT_H_