A purpose of the present invention is to provide a cooker for high-frequency heating apparatus which can heat the inside of the subject to be heated by high-frequency heating, and can apply the scorch onto the surface of the subject to be heated. A wafer W placed on a lower electrode 106 inside a processing chamber 102 at an etching apparatus 100 undergoes the etching process. The system may also include a mobile device to be carried by a user remote from the vehicle that may include a remote wireless transceiver configured to link wirelessly with the vehicle wireless transceiver. The shaft is located on a central axis of the rim and two ends of the shaft are fixed to a vehicle frame. An indication is provided when the current configuration of the computer system differs from the reference configuration.