CLEAN_NITER

    This is the maximum number of components the program  will  accept  to  sub-
    tract.  Once it has been reached, the program starts the restoration phase.

    If  0,  the program will guess a number, based on the image size and maximum
    signal-to-noise  ratio,  and  specified  residual  level  CLEAN_ARES  and/or
    CLEAN_FRES.

    Short form is NITER.

    This  may  be overseded by the /NITER option which imposes a limit per plane
    through an array of values.