; DOKEEP
;---------------------------------------------------------------
;! specifies if something is kept or deleted
;# ADVERB GENERAL
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
DOKEEP    LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
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DOKEEP
Type:   Adverb  (logical,  > 0  =>  true)
Use:    Tells a task or procedure to keep something
Null value:  false (<= 0).
Procedures:
  OOCAL........Self-calibration with spectral-dependent corrections
               for primary beam and spectral index.  DOKEEP > 0 =>
               keep the data set which is the input data divided by
               the model.
Tasks:
  FITLD........Reads FITS files to load images or UV (IDI or UVFITS)
               data to disk  DOKEEP > 0 causes fully flagged
               visibilities to be retained.
  FQUBE........Collects n-dimensional images into n+1-dimensional
               FREQID image.  DOKEEP true syas to retain fully blanked
               or missing m-dimensional images.
  PCLOD........Reads ascii file containing pulse-cal info to PC table.
               DOKEEP true says to keep records that are not in any
               scan.
  SLICE........Task to make a slice file from an image.  DOKEEP says
               to make simple slices stay in input pixels rather than
               being heavily interpolated.
  SNREF........Chooses best reference antenna to minimize R-L
               differences.  DOKEEP says to retain all "temporary"
               SN tables (each with different referance antenna).
  UVLOD........Read export or FITS data from a tape or disk.  DOKEEP
               > 0 causes fully flagged visibilities to be retained.
Procedures:
  IMFRING......Large image delay fitting with IM2CC and OOFRING,
               DOKEEP true says to keep the divided data set.
  IMSCAL.......Large image self-cal with IM2CC and OOCAL.  DOKEEP
               true says to retain the divided data set.
  OOCAL........Determines antenna complex gain with frequency-dependent
               models.  DOKEEP true says to keep the divided data set.
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