Samples of Acid's "Curvature" control.
(1998).iso/products/worleylabs/pics/examples/polk/alt_curveature.jpg)
(1998).iso/products/worleylabs/pics/elements/polk_next_butt.gif){kind=small}
(1998).iso/products/worleylabs/pics/elements/polk_prev_butt.gif){kind=small}