An apparatus comprising an electrolyte cell, an anode, and a porous rigid diffuser. Further, the loudspeaker system can be designed to include drivers of various physical dimensions and can achieve prescribed constant directivity over a large area in both the vertical and horizontal planes. A tool document file may also be stored in the memory and may provide an internal representation of a document providing an image that is representative of a graphical tool. In this configuration, the support layer is positioned between the mask hole and the given layer, and longitudinally spaces the mask hole from the given layer.