z1 = (0.00 staff_space, +0.80 staff_space);
z2 = (0.00 staff_space, -0.08 staff_space);
z3 = (0.25 staff_space, -0.23 staff_space);
z1 = (0.00 staff_space, +0.80 staff_space);
z2 = (0.00 staff_space, -0.08 staff_space);
z3 = (0.25 staff_space, -0.23 staff_space);