Abstract: A television receiver comprising a video display with a wide width to height ratio, horizontal and vertical deflection circuits for generating selectable rasters of different sizes on the video display by modifying horizontal deflection signals, a circuit (Rs) responsive to a vertical deflection signal and generating a first control signal, a waveform generator responsive to the first control signal and generating a substantially parabolic signal, a raster distortion correction circuit responsive to the substantially parabolic signal, and a source of a second control signal indicative of a selected horizontal raster width and the horizontal deflection being modified responsive to the second control signal.