A method of transporting a client signal across an optical transport network comprises dividing a received client signal into a plurality of parallel signals at a lower bit rate. As one example, two or more supply voltage bond pads on an integrated circuit die may be connected together via one or more electrically conductive interconnects. When the electric wire is pulled during disassembly andor recycling of the vehicle body, the terminal breaks at the line of weakness and the electric wire can be removed from said fixing section while the fixing section remains fixed to the vehicle body. A releasable attachment arrangement in the form of an attachment strip to which a display sheet can be affixed and a receiving slot in the drum permits a display sheet to be attached to and removed from the information presentation device without the need to disassemble the device. More specifically, image data is shifted by the width of one pixel in blocks for memory access, and then for output of a gradient value for each pixel, it is further shifted by the width of one pixel unit in sub-blocks which are obtained by dividing each block. Due to the selected convex shapes of the paddle and faceplate, a portion of the paddle front surface is always substantially flush with a portion of the faceplate surface and at no time does any part of the paddle surface protrude past the faceplate front surface.