A device managing apparatus which can collectively manage a plurality of devices connected to a network and reduce resources such as time and costs required for developing a network device managing program. Controllable dampers can be used to select how the dehumidifier system is connected to the interior space and the HVAC system. The screens have a multi-layered structure configured to selectively reflect light in narrow wavelength bands. The cushioning device can optionally have a support element to provide an additional cushioning effect. The respective associativity values represent likelihoods that respective ones of the files will be opened next if respective other ones of the files are currently open.