AIPS HELP file for FREQID in 31DEC09

As of Sat Nov 21 8:01:49 2009

HELP SECTION

FREQID
Type: Adverb (Scalar)
Use:  A selection adverb for the calibration tasks.  FREQID is
      an integer pointer to the desired frequency/bandwidth
      combination of data to be selected. Data written to AIPS
      after 15APR89 may have an associated FQ table (which may
      be printed with PRTAB or LISTR) which contains frequency
      information relevant to the database, the FREQID adverb
      is a quick way to select the data you require and is an
      alternative to the SELBAND and SELFREQ adverbs. In fact,
      sometimes using the SELBAND/SELFREQ adverbs may result
      in an ambiguity; in which case the tasks will insist that
      you use FREQID.
Null value: 0 => first

EXPLAIN SECTION