= Custom object types =
Defines Point2d and SColour as JS classes. The former is fully implemented but never registered, so it's not actually available in script. It serves as a demonstration of how to add a new type.

== class SColour (JSObject) ==
 * '''Overview:'''
  * Holds RGBA values (stored as float)
 * '''Syntax:''' 
  * SColour()	// set everything to 0
  * SColour(float r, float g, float b)	// alpha=1
  * SColour(float r, float g, float b, float a)
 * '''Parameters:'''
  * color/alpha specifications. default values are listed above.
 * '''Returns:'''
  * 
 * '''Notes:'''
  *