This is really only a shell for creating single-segment straight-line Shapes.

	parts bin
	descriptionForPartsBin newStandAlone

	as yet unclassified	top
	from:to:color:width:
	new Answer a new instance of the receiver (which is a class) with no indexable variables. Fail if the class is indexable.

	parts bin	top
	descriptionForPartsBin If the receiver is a member of a class that would like to be represented in a parts bin, answer the name by which it should be known, and a documentation string to be provided, for example, as balloon help. When the 'nativitySelector' is sent to the 'globalReceiver', it is expected that some kind of Morph will result. The parameters used in the implementation below are for documentation purposes only!
	newStandAlone Answer a suitable instance for use in a parts bin, for example