ShapedAction( Object oSource, Bounds boEllipse, double dStart, double dExtent, int iArcType, Action ac )
ShapedAction( StructureSource oSource, Location[] loa, Action ac, Shape clipping )
	ShapedAction( Object oSource, Bounds boEllipse, double dStart,			double dExtent, int iArcType, Action ac )	{		this( oSource, boEllipse, dStart, dExtent, iArcType, ac, null );	}