Thank you Michael.

If a programmer wanted to utilize the new list of numbers in order, from start to end,
is the list already in order, corresponding to: from curve start to curve end?
Or is it necessary to do any ".sort BySelectionOrder()," which is sometimes done when selecting geometry in other code ?

So the code line:
var pt = crv.evaluatePoint( params.item( i ) );
transforms (evaluates) each params number to locate/create a new RAW point on the curve, ( with coordinates in the current cplane ).
A line drawn from such a (tan) point, to the initial External point, will be tangent to the starting curve, at said new point location on the curve.

Sorry to be wordy, but it helps me to understand :-)

- Brian

I just ordered a used copy of the programmers book also.

On the API I also see the curve methods:

equallySpacedPoints? (No documentation in API)

getArcLengthParam Would this method enable a programmer to find the parameter where the ArcLength of the curve is some specific value? And evaluate the point there?