code: func RandModOrder(rng *amcl.RAND) *FP256BN.BIG {
  	// curve order q
  	q := FP256BN.NewBIGints(FP256BN.CURVE_Order)
  
  	// Take random element in Zq
  	return FP256BN.Randomnum(q, rng)
  }
docs: // RandModOrder returns a random element in 0, ..., GroupOrder-1