; INVERS
;---------------------------------------------------------------
;! specifies the version number of the 1st input extension file
;# ADVERB CATALOG
;-----------------------------------------------------------------------
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;;
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;;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
INVERS    LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
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INVERS
Type: Adverb (Real)
Use:  Version number associated with an extension file.  In model
      computations it is often the version of the Clean Components
      table.
Null Value:  0
      Null value usually means take the highest version number.

Verbs:
   EXTDEST.......Deletes one or more extension files.
   EXTLIST.......Lists detailed information about contents of extension
                 files.
   GETTHEAD......Returns keyword values from a table header, also column
                 #, # rows.
   PUTTHEAD......Inserts a given value into a table keyword/value pair.
   TABGET........Returns table entry for specified row, column and
                 subscript.
   TABPUT........Replaces table entry for specified row, column and
                 subscript.
   TKAGUESS......Verb to add a plot of the slice model guess directly on
                 TEK.
   TKAMODEL......Verb to add slice model display directly on TEK.
   TKARESID......Verb to add slice model residuals directly on TEK.
   TKASLICE......Verb to add a slice display on TEK from slice file.
   TKGUESS.......Verb to display slice model guess directly on TEK.
   TKMODEL.......Verb to display slice model directly on TEK.
   TKRESID.......Verb to display slice model residuals directly on TEK.
   TKSLICE.......Verb to display slice file directly on TEK.
   TVACOMPS......Verb to add slice model components directly on TV
                 graphics.
   TVAGUESS......Verb to re-plot slice model guess directly on TV
                 graphics.
   TVAMODEL......Verb to add slice model display directly on TV graphics.
   TVARESID......Verb to add slice model residuals directly on TV
                 graphics.
   TVASLICE......Verb to add a slice display on TV graphics from slice
                 file.
   TVCOMPS.......Verb to display slice model components directly on TV
                 graphics.
   TVGUESS.......Verb to display slice model guess directly on TV
                 graphics.
   TVMODEL.......Verb to display slice model directly on TV graphics.
   TVRESID.......Verb to display slice model residuals directly on TV
                 graphics.
   TVSLICE.......Verb to display slice file directly on TV.
   TVSTAR........Verb to plot star positions on top of a TV image.
Procedures:
   ANCHECK.......Checks By sign in Antenna files.
   IMFRING.......Large image delay fitting with IM2CC and OOFRING.
   OOCAL.........Determines antenna complex gain with frequency-dependent
                 models.
   OOFRING.......Fringe fit data to determine calibration with spectral
                 index options.
   VLBABPSS......Computes spectral bandpass correction table.
   VLBAPCOR......Calculates and applies instrumental phase calibration.
   VLBARUN.......Applies amplitude and phase calibration procs to VLBA
                 data.  INVERS applies to the PC table to be used.
   VLBASNPL......Plots selected contents of SN or CL files.
Tasks:
   AGAUS.........Fits 1-dimensional Gaussians to absorption-line spectra.
   APCAL.........Apply TY and GC tables to generate an SN table.  INVERS
                 applies to the weather table,
   APCLN.........Deconvolves images with CLEAN algorithm.
   APGPS.........Apply GPS-derived ionospheric corrections.
   BLAPP.........Applies baseline-based fringe solutions a la BLAPP.
   BLCAL.........Compute closure offset corrections.
   BLCHN.........Compute closure offset corrections on a
                 channel-by-channel basis.
   BLING.........Find residual rate and delay on individual baselines.
   BLPLT.........Plots BLCAL tables in 2 dimensions as function of
                 baseline and IF.
   BPASS.........Computes spectral bandpass correction table.
   BPEDT.........Interactive TV task to edit uv data based on BP tables.
   BPFLG.........Flgas uv data based on bad BP values.
   BPLOT.........Plots bandpass tables in 2 dimensions as function of
                 time.
   BSCAN.........Seeks best scan to use for phase cal, fringe search, ..
   BSPRT.........Print BS tables.
   CALIB.........Determines antenna calibration: complex gain.
   CC2IM.........Make model image from a CC file.
   CCEDT.........Select CC components in BOXes and above mininum flux.
   CCFND.........Prints the contents of a Clean Components extension file.
   CCGAU.........Converts point CLEAN components to Gaussians.
   CCMOD.........Generates clean components to fit specified source model.
   CCMRG.........Sums all clean components at the same pixel.
   CCNTR.........Generate a contour plot file from an image with CC or MF
                 plotted.
   CCRES.........Removes or restores a CC file to a map with a gaussian
                 beam.
   CCSEL.........Select signifigant CC components.
   CL2HF.........Convert CL table to HF table.
   CLCAL.........Merges and smooths SN tables, applies them to CL tables.
   CLCOP.........Copy CL/SN file calibration between polarizations or IFs.
   CLINV.........Copy CL/SN file inverting the calibration.
   CPASS.........Computes polynomial spectral bandpass correction table.
   CXCLN.........Complex Hogbom CLEAN.
   DTCHK.........Task to check results of a test using simulated data.
   EDITA.........Interactive TV task to edit uv data based on TY/SY/SN/CL
                 tables.
   ELFIT.........Plots/fits selected contents of SN, TY, SY, PC or CL
                 files.
   ELINT.........Determines and removes gain dependence on elevation.
   EVASN.........Evaluates statistics in SN/CL tables.
   EVAUV.........Subtracts & divides a model into UV data, does statistics
                 on results.
   EXTAB.........Exports AIPS table data as tab-separated text.
   FGDIF.........Compares affect of 2 FG tables.
   FGPLT.........Plots selected contents of FG table.
   FGPRT.........Pprints counts of selected portions of an FG table.
   FGTAB.........Writes frequency-range flags to a text file to be read by
                 UVFLG.
   FIXAN.........Fixes the contents of the ANtenna extension file.
   FRING.........Fringe fit data to determine antenna calibration, delay,
                 rate.
   GSTAR.........Task to read a Guide Star (UK) table and create an ST
                 table.
   HF2SV.........Convert HF tables from FRING/MBDLY to form used by
                 Calc/Solve.
   HFPRT.........Write HF tables from CL2HF.
   KRING.........Fringe fit data to determine antenna calibration, delay,
                 rate.
   LISTR.........Prints contents of UV data sets and assoc. calibration
                 tables.
   LOCIT.........Fits antenna locations from SN-table data.
   LWPLA.........Translates plot file(s) to a PostScript printer or file.
   MBDLY.........Fits multiband delays from IF phases, updates SN table.
   MF2ST.........Task to generate an ST ext. file from Model Fit ext.
                 file.
   MFPRT.........Prints MF tables in a format needed by modelling
                 software.
   MOD3D.........Computes a 3D CC model from a set of facets.
   OBEDT.........Task to flag data of orbiting antennas.
   OBPLT.........Plot columns of an OB table.
   OBTAB.........Recalculate orbit parameters and other spacecraft info.
   OFLAG.........Uses on-line flag table information to write a flag
                 table.
   OOSUB.........Subtracts/divides a model from/into a uv data base.
   PCAL..........Determines instrumental polarization for UV data.
   PCASS.........Finds amplitude bandpass shape from pulse-cal table data.
   PCAVG.........Averages pulse-cal (PC) tables over time.
   PCCOR.........Corrects phases using  PCAL tones data from PC table.
   PCEDT.........Interactive TV task to edit pulse-cal (PC) tables.
   PCFIT.........Finds delays and phases using a pulse-cal (PC) table.
   PCFLG.........Interactive flagging of Pulse-cal data in channel-TB
                 using the TV.
   PCPLT.........Plots pulse-cal tables in 2 dimensions as function of
                 time.
   PCRMS.........Finds statistics of a pulse-cal table; flags bad times
                 and channels.
   PDEDT.........Interactive TV task to edit polarization D-term (PD)
                 tables.
   PDPLT.........Plots selected contents of PD tables.
   PLOTC.........Plots color schems used by 3-color plot tasks.
   POLSN.........Make a SN table from cross polarized fringe fit.
   PPAPP.........Applies Right minus Left phase difference to a 2nd data
                 set.
   PRTAB.........Prints any table-format extension file.
   PRTAN.........Prints the contents of the ANtenna extension file.
   PRTCC.........Prints the contents of a Clean Components extension file.
   PRTOF.........Prints on-line flag table information.
   PRTSY.........Task to print statistics from the SY table.
   QUOUT.........Writes text file of Q, U versus frequency to be used by
                 RLDIF.
   RLCAL.........Determines instrumental right-left phase versus time (a
                 self-cal).
   RM2PL.........Plots spectrum of a pixel with RMFIT fit.
   RMFIT.........Fits 1-dimensional polarization spectrum to Q/U cube.
   RSTOR.........Restores a Clean component file to a map with a Gaussian
                 beam.
   SAD...........Finds and fits Gaussians to portions of an image.
   SDCLN.........Deconvolves image by Clark and then "SDI" cleaning
                 methods.
   SDTUV.........Task to convert SD table files to UV like data.
   SL2PL.........Task to convert a Slice File to a Plot File.
   SLCOL.........Task to collate slice data and models.
   SLFIT.........Task to fit gaussians to slice data.
   SLPRT.........Task to print a Slice File.
   SNBLP.........Plots selected contents of SN or CL files on a baseline
                 basis.
   SNCOP.........Task to copy SN table averaging some input IFs.
   SNDUP.........Copies and duplicates SN table from single pol file to
                 dual pol.
   SNEDT.........Interactive SN/CL/TY/SY table editor using the TV.
   SNFIT.........Fits parabola to SN amplitudes and plots result.
   SNFLG.........Writes flagging info based on the contents of SN files.
   SNIFS.........Plots selected contents of SN, TY, SY, PC or CL files by
                 IF.
   SNP2D.........Task to convert SN table single-channel phase to delay.
   SNPLT.........Plots selected contents of SN, SY, TY, PC or CL files
                 versus time.
   SNREF.........Chooses best reference antenna to minimize R-L
                 differences.
   SNSMO.........Smooths and filters a calibration SN table.
   SOUSP.........Fits source spectral index from SU table or adverbs.
   STRAN.........Task compares ST tables, find image coordinates (e.g.
                 guide star ).
   SY2TY.........Task to generate a TY extension file from an EVLA SY
                 table.
   SYPRT.........Task to print values from the SY table.
   SYSOL.........Undoes and re-does nominal sensitivity application for
                 Solar data.
   SYVSN.........Plots selected SY/TY data with SN solution values versus
                 time.
   TABED.........Task to edit tables.
   TACOP.........Task to copy tables, other extension files.
   TADIF.........Prints differences between two table-format extension
                 files.
   TAFLG.........Flags data in a Table extension file.
   TAMRG.........Task to merge table rows under specified conditions.
   TAPLT.........Plots data from a Table extension file.
   TAPPE.........Task to append 2 tables and merge to output table.
   TASRT.........Task to sort extension tables.
   TBDIF.........Compare entries in two tables.
   TBOUT.........Writes an AIPS table into a text file for user editting.
   TBSUB.........Make a new table from a subset of an old table.
   TBTSK.........Paraform OOP task for tables.
   TVSAD.........Finds and fits Gaussians to portions of an image with
                 interaction.
   TYAPL.........Undoes and re-does nominal sensitivity application.
   TYCOP.........Copy TY or SY table calibration between IFs.
   TYSMO.........Smooths and filters a calibration TY or SY table.
   UNCAL.........Sets up tables for uncalibrating Australia Telescope
                 data.
   UVADC.........Fourier transforms and corrects a model and adds to uv
                 data.
   UVCON.........Generate sample UV coverage given a user defined array
                 layout.
   UVFIT.........Fits source models to uv data.
   UVFIX.........Recomputes u,v,w for a uv database.
   UVGIT.........Fits source models to uv data.
   UVSUB.........Subtracts/divides a model from/into a uv data base.
   VLAMP.........Makes ANTAB file for phased VLA used in VLBI
                 observations.
   WETHR.........Plots selected contents of WX tables, flags data based on
                 WX.
   XG2PL.........Plots spectrum of a pixel with XGAUS/AGAUS and
                 ZEMAN/ZAMAN fits.
   XGAUS.........Fits 1-dimensional Gaussians to images: restartable.
   ZAMAN.........Fits 1-dimensional Zeeman model to absorption-line data.
   ZEMAN.........Fits 1-dimensional Zeeman model to data.
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