A number of RF power transmission paths are defined to extend from an RF power source through a matching network, through a transmit electrode, through a plasma to a number of return electrodes. The system includes a source of pressurized oxygen and a fluid conduit extending between the pressurized oxygen source and a patient. That information is transferred to the external storage system and used control its operations in accordance with the desired performance parameter. Phase change material can be incorporated in the opposed side portions of the heat block. The system and method captures various types of interaction with the viewers and either takes appropriate action, as configured by a webcast program administrator, or simply logs this interaction to a database where audience attention and identity can be validated at a later date. The direct-writing of a pattern portion may rely on a single mirror mode or a combination of modes.