; PCUT
;---------------------------------------------------------------
;! Cutoff in polarized intensity
;# ADVERB POLARIZATION PLOT
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
PCUT      LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
----------------------------------------------------------------
PCUT
Type: Adverb  (Real)
Use:  If some value is below PCUT in units of the image, then
      some action will not occur.
Null value:  none and no default.
Tasks:
   KNTR..........Make a contour/grey plot file from an image w multiple
                 panels.  Total polarizations less than PCUT (Jy/beam)
                 do not generate plotted vectors.
   PCNTR.........Generate plot file with contours plus polarization
                 vectors.  PCUT causes vectors to be omitted based on
                 the intensity of the vector-length (total polarization)
                 image.
   POLCO.........Task to correct polarization maps for Ricean bias.
                 Polarizations less than PCUT (sigma, i.e., units of the
                 noise) are blanked on output.
   QUFIX.........Determines Right minus Left phase difference, corrects
                 cal files.  Only total polarizations greater than PCUT
                 i n both images are used.
   RMFIT.........Fits 1-dimensional polarization spectrum to Q/U cube.
                 Fits are done only to spectra having an average total
                 polarization greater than PCUT.  May be changed on a
                 restart.
----------------------------------------------------------------