\label{Function_Plot_Response_Spline}
``Index'' - This is the label assigned to the spline.  In general, it's simplest just to label them A, B, C etc.

``Order'' - This determines the number of Control Points on the spline.  For example, selecting '3' means there will be 3 points on the spline that can be moved, as well as 3 points off the spline that will control the slope.

``Initial x-value'' and ``Initial y-value'' - These values determine where the left most Control Point will be.

``Scale x'' - This determines the right most location of the Control Points (on the spline).  To figure out where this point will be, add 'Initial x-value' to 'Scale x'.

``Scale y'' - This determines the distance (in the y-direction) between the Control Points on the spline, and the ones that control the slope.