The image below started with the identical stroke each time, but was redrawn by Curvy after settings had been changed. You can add a fade in or fade out to the redrawn stroke, change brush settings, or even use a completely different sculpting brush.
This is useful if you are not sure what intensity of pinch to use for a stroke as you can tweak the settings and press "I" to see the results without having to manually undo and draw the stroke each time.
