; SELFREQ
;---------------------------------------------------------------
;! Specified frequency
;# ADVERB CALIBRATION
;-----------------------------------------------------------------------
;;  Copyright (C) 1995
;;  Associated Universities, Inc. Washington DC, USA.
;;
;;  This program is free software; you can redistribute it and/or
;;  modify it under the terms of the GNU General Public License as
;;  published by the Free Software Foundation; either version 2 of
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;;
;;  This program is distributed in the hope that it will be useful,
;;  but WITHOUT ANY WARRANTY; without even the implied warranty of
;;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;  GNU General Public License for more details.
;;
;;  You should have received a copy of the GNU General Public
;;  License along with this program; if not, write to the Free
;;  Software Foundation, Inc., 675 Massachusetts Ave, Cambridge,
;;  MA 02139, USA.
;;
;;  Correspondence concerning AIPS should be addressed as follows:
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;;         Postal address: AIPS Project Office
;;                         National Radio Astronomy Observatory
;;                         520 Edgemont Road
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
SELFREQ   LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
----------------------------------------------------------------
SELFREQ
Type: Adverb (Real)
Use: A selection adverb for the calibration tasks.
It specifies the frequency of the data to be selected. If
more than one IF are present in the data, SELFREQ is the
frequency of the first IF required.
Units are Megahertz.
Null value: use FREQID
----------------------------------------------------------------
