/usr/lib/open-axiom/input/bern.input is in open-axiom-test 1.5.0~svn3056+ds-1.
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1 2 | -- @(#)bern.input 1.1 89/09/07 20:54:27
draw(curve(cos(t)/(1+sin(t)**2),sin(t)*cos(t)/(1+sin(t)**2)),t = -%pi..%pi, [title "Lemniscate of Bernoulli"])
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