A method for improving an over erasing effect of a charge-trapping memory cell. A second material layer is formed on a first material layer. The Image captured by the camera is displayed on a screen, and a drawing of the part is overlaid on the image of the part. The logical multicast data is metered once at the meter and subsequently replicated and transmitted onto the communications network a predetermined number of times at an output port so as not to degrade the flow of other data through the system. The inner media support section includes a plurality of media receiving areas adapted to receive and separately individually support a plurality of pieces of recording media. Idlers may be used on the supports.