A method and apparatus are described including determining address using an access point address and a multicast group address, transmitting a recovery request message to a recovery server to request recovery data using the address and receiving the recovery data from the recovery server. An articulated acoustic tube is coupled to the housing at its near end portion. Recognizer plug-ins perform the recognition of particular strings in an electronic document. The summation, correlation, and shifting can be performed by a pixel pipeline processing circuit. The behavior comprises one of unique behavior, transparent behavior, and different behavior.