num.align_to (Y_AXIS, UP);
num.translate_axis (-0.5, Y_AXIS);
total.add_at_edge (X_AXIS, LEFT, num, - num.extent (X_AXIS).length ()
num.align_to (Y_AXIS, UP);
num.translate_axis (-0.5, Y_AXIS);
total.add_at_edge (X_AXIS, LEFT, num, - num.extent (X_AXIS).length ()