Abstract: A data processing system comprises a plurality of electronic book reader devices, each of the electronic book reader devices having a display and being connectable to a wireless network of electronic book reader devices, in which: a first electronic book reader device of the plurality comprises a data transmitter configured to send, via the wireless network, reading position data defining: a current book data file being displayed by that electronic book reader device, and a current display position within that book data file; and at least a second, different, electronic book reader device of the plurality comprises a data receiver configured to receive, via the wireless network, the reading position data sent by the first electronic book reader device, and a display controller configured to control the second electronic book reader device to display at least an indication of the current book data file and the current display position of the first electronic book reader device.

Abstract: An audio/video device including a plurality of walls together forming a case, wherein one wall of the plurality of walls includes an inner peripheral edge. A surface extends from the inner peripheral edge inwardly of the case and defines an open-sided outwardly facing cavity. At least one item of connection is located within the cavity. A tongue is provided having a base and an outer peripheral edge. The inner peripheral edge of the one wall is divided into a first portion and a second portion. At the base, the tongue joins with the first portion of the inner peripheral edge of the one wall. The tongue extends substantially parallel with the one wall from the base to the outer peripheral edge so as to partially close the cavity and define a gap around the tongue, the gap extending between the outer peripheral edge of the tongue and the second portion of the inner peripheral edge of the one wall.

Abstract: An audio/video device including a plurality of walls together forming a case, wherein one wall of the plurality of walls includes an inner peripheral edge. A surface extends from the inner peripheral edge inwardly of the case and defines an open-sided outwardly facing cavity. At least one item of connection is located within the cavity. A tongue is provided having a base and an outer peripheral edge. The inner peripheral edge of the one wall is divided into a first portion and a second portion. At the base, the tongue joins with the first portion of the inner peripheral edge of the one wall. The tongue extends substantially parallel with the one wall from the base to the outer peripheral edge so as to partially close the cavity and define a gap around the tongue, the gap extending between the outer peripheral edge of the tongue and the second portion of the inner peripheral edge of the one wall.