The 'ellipse' element defines an ellipse which is axis-aligned with the current user coordinate system when it is not the initial user coordinate system.
The test shows an 'ellipse' element originating at (0,0) of the current user coordinate system, which has been altered via 'transform' from the initial user coordinate system. Two perpendicular lines which also originate at (0,0) and advance along the x and y axes of the current user coordinate system are shown. These lines overlap the top and left edges of the ellipse and verifies that the ellipse is thus axis-aligned with its current user coordinate system.
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The test is passed if both ellipses are divided into four equal parts by two sets of crossing lines, and the rightmost ellipse and crossing lines are rotated together.