This specieal case of a CRFeature is used to describe a feature containing only one point.

	testing
	isDot

	accessing	top
	drawCapturedPointsOn:size:topLeft:relative:properties: Draw the captured points on the given form. Refinied in subclasses
	drawFeatureOn:size:topLeft:relative:properties: Draw the feature on the given form. Refinied in subclasses

	testing	top
	isDot