FreehandSpline15-AsMCR
Bobo's 'freehandspline15.ms' as a MacroScript for MAX r3.x. Contains brief explanation of how to convert UtilityScript to MacroScript.
Here's the original description: "FreehandSpline (FHS) lets you draw freeform splines with the mouse or tablet similar to drawing with a pencil. It lets you quickly create complex shapes with control over form and quality."