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%% Test case for handling leading signs. %mode init B2=-3 B4=-4*5 B5=-2*-3 B6=+4 B7=+4+6 A2=-B2 A3=A2*-B7 A4=+B5+B6 %calc %mode result B2=-3 B4=-20 B5=6 B6=4 B7=10 A2=3 A3=-30 A4=10 %check