Verify the basic capability to handle the 'ellipse' shape element. Four pairs of ellipses should be displayed in the four quadrants, with the shapes in each pair being identical. Filling, stroking, and filling-plus-stroking are applied, and the cx,cy (center position) and rx,ry (ellipse radii) attributes are varied.

The rendered picture should match the reference image, except for possible variations in the labelling text (per CSS2 rules).

This test uses 'text', 'rect' and 'path' elements, as well as fill (solid primary colors), stroke (primary colors and wide lines), font-family ("Helvetica"), and font-size properties within the 'style' attribute.