A method for providing additional descriptive information about a file during a download to a local computer so that functional and descriptive aspects of the file may easily be reviewed without having to open the file. The measuring system includes a plurality of panels constituting a floor surface, ceiling surface, or wall surface, a rectangular vent unit with openings located in place of a given one of the panels, a space with a given height formed by pillars on the back sides of the rectangular vent unit and the panels, and an air conditioner for supplying cooking air to the space. This enables detailed control of outputting, such as the restriction of the use of a printer, and the restriction of the use a printer in accordance with a user or the content of a document to be output. In one embodiment, a backup pacing pulse is output by an unselected electrode if a loss of capture is detected.