> So, there are cubic and "natural" splines that can be used independently, and
> then there's the bezier spline that seems to only be invoked with lathe and sor.
>
> Is there a true bezier spline that can be used as a regular spline?  Is it the
> same as natural spline?  (I would think that given the different name, the
> answer is no)
>
>
>
>

For the "natural" spline, it looks like it's similar to the cubic 
spline, but continuing up to the first and last point with curve been 
out of controll at those points.

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