A system to apply a smoothing filter during anti-aliasing at a post-rendering stage. The scattering data is related to a scattering kernel by an integral operator. Its configuration is dependent upon paging load in the system. Detecting scattered radiation while illuminating the first and second structures with radiation to obtain first and second scatterometer signals. A receiving member is positioned on an exterior of the top panel for supporting a tablet computer in a standing position only along its lower end. Before selecting the channel, the method detects a channel which another radio network is using and a channel having high noise.