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// Causes a CGAL assertion in CGALEvaluator::process() e=0.000; for (m = [ [ [ 0, 1, 0], [ 0, 0, 1], [ 1, 0, 0] ], [ [-1, 0, e], [ 0,-1, 0], [ 0, 0,-1] ] ] ) multmatrix (m) cube([1,5,1], center=true);