A closed loop dispensing system including a mechanical venting assembly which ensures that sufficient air may enter the interior of the container as liquid is being drawn from the container. The layer information pieces are arranged in an order in accordance with the hierarchical structure, and the kind information pieces are arranged in pair with the layer information pieces indicating the layer of the corresponding record information piece so as to specify the logical position of the corresponding record information piece within the hierarchical structure. The apparatus can also include a gate dielectric having a portion disposed on the first inter-poly dielectric. The system includes additional user mounted sensors for determining the axial position of the camera, thereby compensating for inadvertent eye movement when the point of regard has not changed. The magnets and rotating coils cooperate to energize a power utilization circuit also mounted with respect to the wheel hub to rotate therewith. The paper web wrapper is wound about the roll in a slightly helical manner so that the edges of the wrapper layers overlap in a staggered fashion.