; NIF
;---------------------------------------------------------------
;! Number of IFs (spectral windows) in a data set
;# ADVERB UV VLA
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
NIF       LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
----------------------------------------------------------------
NIF
Type:  Adverb  (scalar)
Use:   Specifies the number of IFs or spectral windows to be found in
       a data set.
Null value:
       0 => select from data
Verbs
  BDF2AIPS.....Load selected portions of ASDMFILE to AIPS data areas.
               NIF if set limits the load to configurations with the
               specified number of IFs.
Tasks
  ATLOD........Translate ATNF RPFITS data into AIPS.
  REIFS........Breaks spectral windows into multiple spectral windows
               (IFs).  NIF specifies how many.
  SETJY........Task to enter source info into source (SU) table.
               NIF specifies the IF to which SYSVEL applies.
----------------------------------------------------------------