Use Control Variate

Key Use Control Variate in
Model[Simulation] refers to a boolean determining whether the employment or not of the "Control Variate" technique can be controlled by the user.
TRUE means the "Control Variate" technique is indeed relevant and the user can control whether it is used or not.
FALSE means either a) the "Control Variate" technique is not relevant or b) it is relevant but the user cannot control whether it is actually used or not.