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This sketch simulates a title revolving in perspective by animating three polygons (shaped like J, S, and P) around an ellipse. If you click the Show button, you can vary the eccentricity of the ellipse by adjusting the two concentric circles (which determine the major and minor axes of the ellipse of rotation). The small segment in the lower part of the sketch (once the mechanism is "shown") controls the orientation and height of the revolving letterforms.