A navigation system includes a driving profile program. The retainer is movable relative to the flexibly springable arm member whereby the flexibly springable arm member is unfurlable in a clockwise or anticlockwise direction. This is accomplished by effectively utilizing a mold plate with multiple rows of patty cavities. A pre-stressed membrane is positioned proximate to the device layer; a tensile prestress of the pre-stressed membrane increases the natural frequency of the thermally tuned filter.