This class stores points that are in short integer range (e.g., -32767 <= value <= 32768). It is used to pass data efficiently to the primitive level during high-bandwidth 2D graphics operations.

	accessing	top
	at: Return the element (e.g., point) at the given index
	at:put: Store the argument aPoint at the given index
	bounds
	defaultElement Return the default element of the receiver
	size Answer how many elements the receiver contains.

	instance creation	top
	new: Answer an instance of this class with the number of indexable variables specified by the argument, sizeRequested.