An editing system and a control method for improving efficiency of editing work. The ventilated casing includes a housing which has a ventilation inlet and a ventilation outlet. The pBSC stores location information in the VLR when a mobile station executes location registration, and confirms a location and state of a mobile station by dummy paging and updates its location information stored in the VLR when the relevant mobile station keeps up an idle state during a certain period. The codec also includes a decoder having entropy and run-length decoding sections whose throughputs are proportional to. The feet of the user are placed on the right and left support parts such that heels abut against the right-rear and left-rear abutting parts and that patellar ligaments or shin bones abut against the right-middle and left-middle abutting parts. The machine is distinguished in that the air nozzles include throttled air nozzles and unthrottled air nozzles.