STOKES /FILE

        [CLEAN\]STOKES Key /FILE UVin UVout

    Derive a single polarization UV table  UVout  with  the  polarization  state
    specified  by Key from a multi-polarization UV table UVin. Key is any of the
    following: NONE, I, Q, U, V, RR, LL, HH, VV, XX, YY.