When it is determined that a power mode is a power save mode, and that a MAC address in a received beacon matches the MAC address of a wireless communication apparatus which newly joins a wireless network, the power mode of all the communication apparatuses which have joined the wireless network is switched from the power save mode to a normal power mode. In this regard, a representative system, among others, includes a base station that is configured to receive transmitted signals from one or more mobile stations, calculate one or more data rates based on the transmitted signal associated with the one or more mobile stations, respectively, and generate data rate signals based on the calculated one or more data rates. The information forwarding system includes an information display for displaying the search results; a selector for selecting one, or more, search results from among the search results; and an output device for sending the designated contents selected by the selector to a separate supply device so as to designate the operation of the separate supply device. The invention also provides a gauge element for converting a bow divider into a gauge for measuring andor marking teeth for the determination of the placement of attachments for orthodontic braces.