how to use law curve in nx-8.?

The law curve is used to draw various curves such as Helix ,sin curve,cos curve,line,ellipse ,etc.
those curves are used to design spring ,cam ,washer,
etc..

See Attached file. I hope that will be a good answer for you.

this site is reference about curve function.
http://www.digi-area.com/DifferentialGeometryLibrary/gallery.php

Thanks !

how to use Helix with variable pitch nx
Please help me build the following 3d model with the twist twist step.
Thanks you