APPLY AMPLI

        [CALIBRATE\]APPLY AMPLI [Gain] [/FLAG [Threshold]]

      Apply  an  Amplitude gain calibration result. In doing so, the weights are
    never up-scaled, even when the Amplitude correction factor is  smaller  than
    1.  They are down-scaled for visibilities with correction factor larger than
    1. The rationale behind this behaviour is to avoid giving  more  weights  to
    data which has been modified in a self-calibration process.