IAgReceiverGraphics Interface for a receiver's 2D Graphics properties.

BoresightColor	The color in which boresight graphics display.
BoresightMarkerStyle	The marker style used to represent the boresight graphically.
ContourGraphics	Gets the receiver's antenna contour graphics interface.
Show	Opt whether to display graphics for the receiver object
ShowBoresight	Opt whether to display boresight graphics for the receiver's antenna.