One implementation provides a method for providing a graphical user interface that allows a user to view proposed modifications to a knowledge entity. One of the objects of the present invention is to make it possible to allocate the wireless resources to more than one road side device without interference thereamong. A user control moves a first marker icon within a predetermined range of ticks. If the intermediate network device receives a proposal bridge protocol data unit message on the third port, rather than transition the one or more second ports to a blocking state, the intermediate device is adapted to maintain the one or more second ports in the forwarding state. A DC to DC switching converter is coupled to the DC transformer and is operable to convert the DC transformed power signal to a converted DC power signal. A first conductive sheet contains two or more conductive first sense pads and a first connection for electrically connecting the adjacent first sense pads on a first transparent substrate.