tracerepere
marks
/A {3 3} def /C {-3 -3} def
/B {3 -3} def /D {-3 3} def
/ell [C 2 1 -30] def
[A 2 1 0] ellipse
B 2 3 ellipse
-45 135 ell Ellipse
-45 ell epoint point
/ellipseangle 45 def
D 2 1 ellipse
[A B C D] points
setTimesItalic
(A) A urtext (C) C urtext
(B) B urtext (D) D urtext
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