Syntax: spim2 (file root) [(2nd file root) [(3rd file root)] ... ]
             [big=(FITS file)]  [-star]  [-nocheck]  [-noerr]
             [cd=median box:threshold] (for all images)
             [cd1= ...] [cd2= ...] (for specific images)
    Multiple order, multiple image viewing of polynomial
    wavelength scale spectra.  file = (root).fits
    Error file = (root)e.fits or E-(subroot).fits
  big=  : A large wavelength-span spectrum to overplot.
  -star : The second file listed is to be used for division of
          of atmospheric absorption features in first file.
  cd=, cd1=, ... cd9= : Run "Correct Deviants" routine.
  -nocheck : do not prompt before writing out modified images.
  -noerr   : do not try to load error files.