XorEllipse(X, Y, MajorAxis, MinorAxis)
XORs an ellipse centered at the specified X, Y position using the specified major and minor axes and current drawing color.
See the Ellipse function for a description of an ellipse.
Parameters
X - Horizontal center of ellipse
Y - Vertical center of ellipse
MajorAxis - Size of major axis
MinorAxis - Size of minor axis