A client server arrangement for downloading media content filters from a server device to a client device. Each cell in the network has an area defined by azimuth and range limits. Advantageously, the floating gate of the reference cells is contacted by a first contact terminal connected to a discharge transistor for the periodical discharge of possibly present charges. An adjustment device provides for moving the linear stop from an inmost position to an outmost position, and simultaneously lowering the camming foot into the hole in the floor and moving the camming foot to urge the module into a fully seated position wherein the module is moved against the linear stop when the linear stop is in its outmost position. One kind or two and over kinds of metal oxide can be used. The method includes providing at least one body element of a slideshow, where the body element is at least one selected from a group of a master audio element to allow audio playback with or without synchronized images and a master image element to allow playback of images with a specified timing, the master image element being associated with at least one image element having a location.