Luis's post about rotation prompts me to ask another rotation question --sorry not in formal mathematical terminology. The Chaoscope interface provides for rotation in two visual planes: Horizontal mouse movement 'turns' the attractor back an forth like seeing a turntable on edge. Vertical mouse movement 'flips' the attractor over like a disc being changed from A-side to B-side (the apparent 'front' of the image goes up or down). Is there an easier way to achieve 'clock' hand rotation of an image, other than trial and error 'turn', 'flip' and then 'turn' back? As [Ctrl] and [Shift] drags give zoom and translation, perhaps [Alt] drag could be used for clock and counter-clock wise rotation? Regards, Carl ___________________________________________________________ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/