; PRTLEV
;---------------------------------------------------------------
;! Specifies a code for the amount of information requested.
;# ADVERB HARDCOPY
;-----------------------------------------------------------------------
;;  Copyright (C) 1995, 2020
;;  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
;;  the License, or (at your option) any later version.
;;
;;  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:
;;         Internet email: aipsmail@nrao.edu.
;;         Postal address: AIPS Project Office
;;                         National Radio Astronomy Observatory
;;                         520 Edgemont Road
;;                         Charlottesville, VA 22903-2475 USA
;-----------------------------------------------------------------------
;---------------------------------------------------------------
PRTLEV    LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
----------------------------------------------------------------
PRTLEV
Type:  Adverb    (Scalar)
Use:   To limit the amount of information displayed by programs.  For
       example, PRTLEV = 0 instructs PRTTP to print only IMHEADER-like
       summaries of each FITS file.  With PRTLEV = 1, PRTTP also prints
       all FITS header card images except History cards and, with PRTLEV
       = 2, even the (probably numerous) History cards are printed.

       Consult the help files for the verbs and tasks below to see the
       specific PRTLEV codes used.
Verbs:
   FREESPAC......Displays available disk space for AIPS in local system.
   IMCENTER......Returns pixel position of sub-image centroid.
   MAXFIT........Returns pixel position and image intensity at a maximum.
   OBITIMAG......Access to OBIT task Imager without self-cal or peeling.
   OBITMAP.......Simplified access to OBIT task Imager.
   OBITPEEL......Access to OBIT task Imager with self-cal and peeling.
   OBITSCAL......Access to OBIT task Imager with self-cal, NOT peeling.
Procedures:
   ANCHECK.......Checks By sign in Antenna files.
   TVMAXFIT......Displays fit pixel positions and intensity at maxima on
                 TV.
Tasks:
   ANTAB.........Read amplitude calibration information into AIPS.
   APCAL.........Apply TY and GC tables to generate an SN table.
   APGPS.........Apply GPS-derived ionospheric corrections.
   BLSUM.........Sums images over irregular sub-images, displays spectra.
   BSTST.........Graphical display of solutions to frequency-switched
                 data.
   CLIP..........Edits data based on amplitudes, phases, and weights out
                 of range.
   CORER.........Calculates correlator statistics and flags bad ones.
   DELZN.........Determines residual atmosphere depth at zenith and clock
                 errors.
   DFTPL.........Plots DFT of a UV data set at arbitrary point versus
                 time.
   DTCHK.........Task to check results of a test using simulated data.
   DTSIM.........Generate fake UV data.
   ELINT.........Determines and removes gain dependence on elevation.
   FARS..........Faraday rotation synthesis based on the brightness vs
                 wavelength.
   FILIT.........Interactive BOXFILE editing with facet images.
   FINDR.........Find normal values for a uv data set.
   FLAGR.........Edit data based on internal RMS, amplitudes, weights.
   HFPRT.........Write HF tables from CL2HF.
   INDXR.........Writes index file describing contents of UV data base.
   JMFIT.........Fits Gaussians to portions of an image.
   KRING.........Fringe fit data to determine antenna calibration, delay,
                 rate.
   LOCIT.........Fits antenna locations from SN-table data.
   LPCAL.........Determines instrumental polarization for UV data.
   MBDLY.........Fits multiband delays from IF phases, updates SN table.
   MSORT.........Sort a UV dataset into a specified order.
   OMFIT.........Fits sources and, optionally, a self-cal model to uv
                 data.
   PBEAM.........Fits the analytic function to the measured values of the
                 beam.
   PCAL..........Determines instrumental polarization for UV data.
   PCFIT.........Finds delays and phases using a pulse-cal (PC) table.
   PCRMS.........Finds statistics of a pulse-cal table; flags bad times
                 and channels.
   PEEK..........Fits pointing model function to output from the VLA.
   PRTTP.........Prints contents of tapes, all supported formats.
   RLCAL.........Determines instrumental right-left phase versus time (a
                 self-cal).
   RLDLY.........Fringe fit data to determine antenna R-L delay
                 difference.
   SAD...........Finds and fits Gaussians to portions of an image.
   SDLSF.........Least squares fit to channels and subtracts from SD uv
                 data.
   SPCAL.........Determines instrumental polzn. for spec. line UV data.
   TVSAD.........Finds and fits Gaussians to portions of an image with
                 interaction.
   UFLAG.........Plots and edits data using a uv-plane grid and the TV.
   UTESS.........Deconvolves images by maximizing emptiness.
   UVFIT.........Fits source models to uv data.
   UVGIT.........Fits source models to uv data.
   UVLIN.........Fits and removes continuum visibility spectrum, also can
                 flag.
   VLOG..........Pre-process external VLBA calibration files.
   VTESS.........Deconvolves sets of images by the Maximum Entropy Method.
   WIPER.........Plots and edits data from a UV data base using the TV.
----------------------------------------------------------------