Ellipse x1%, y1%, x2%, y2%, rgb_color%

Draws an ellipse on the screen.
The center of the ellipse is the center of the specified bounding rectangle.
The point x1%,y1% is upper-left corner while the point x2%, y2% is lower-right corner of the bounding rectangle.
rgb_color% is the color of the "brush" used to draw the figure.

Ellipse 100, 100, 200, 200, &hff00ff : Rem Draw a circumference with Diam=100