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Feb 12, 2015 at 20:56 comment added Gerhard Paseman I see this is a slight modification of Richard's visualization. I recommend comparing and contrasting the two visualizations to see what works. Gerhard "Twist This Way And That" Paseman, 2015.02.12
Feb 12, 2015 at 20:49 history answered Gerhard Paseman CC BY-SA 3.0