C+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
C
C     VKIEL - Viewer for KIEL FTMW spectra
C             -          ----
C
C+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
c
c     This program allows viewing of multiple spectra contained in a given
c     directory and recorded in the early KIEL FTMW standards:
c
c     MWFTSBI 1.0 of the X/P band waveguide spectrometer
c     FTMW2.x of the K-band waveguide spectrometer
c
c     The recommended running procedure is to let VKIEL identify and read all
c     bona fide measurement files from the current directory.
c
c     Features for using with the AABS package:
c     1/ All component spectra can be synthesised into a single spectrum 
c        with the U option of the SUMMAR screen.
c     2/ Listing file LIST for identifying the component spectra on the ASCP_L
c        frequency axis can be generated with program LISTWG.
c
c
c  Interdependence of displays:
c
c         SUMMAR----- press O -> -----LOOKSP
c           |      <- press ENTER
c           |
c            -------- press I -> -----INTCOM----- press 0-9 -> ------LOOKSP
c                  <- press ENTER               <- press ENTER
c
c where:  SUMMAR - summary screen of interferogram amplitudes as a function 
c                  of frequency (A-S, K-L, W-Z scrollable)
c         INTCOM - interferogram comparisons, nine interferograms per screen
c                  (A-S, W-Z scrollable)
c         LOOKSP - individual interferogram and its FFT with multiple
c                  modification/display/output options
c
c         Each screen has its own help summary accessible by pressing H
c
c
c
C   Ver  24a.III.2022                             ---- Zbigniew KISIEL   ----
C                          __________________________________________________
C                         | Institute of Physics, Polish Academy of Sciences |
C                         | Al.Lotnikow 32/46, Warszawa, POLAND              |
C                         |                             kisiel@ifpan.edu.pl  |
C                         |     http://info.ifpan.edu.pl/~kisiel/prospe.htm  |
C_________________________/--------------------------------------------------
C
C  Modification history:
C
C  29.12.03:  creation from V6 of 28.10.03
C   2.10.12:  port to ivf2011 and spectrum synthesis taken up to V6_20 level
c  24.10.18:  write out decoded decay file header + enhancements
C  30.10.18:  improved access to descriptive info in spectral files + mods
C  15.11.18:  modifications to the spectrum synthesis option
C  12.01.19:  mods to ASCII interferogram output
C  30.04.18:  F option in LOOKSP, Am mode
C  29.07.19:  Debugging, mods to FID n option
C  11.11.19:  Blanking of the first 1 MHz of frequency domain
C   5.12.19:  Blanking known spurious lines
C  18.12.19:  Modified handling of n.tau and FID cutoffs
C  28.12.19:  Modified 'ctrl I' information
C  28.09.20:  graphics tweaks to avoid setting XP compatibility for Windows10
C  14.03.22:  modified ^I option
C  24.03.22:  .FFT standard output + mods
C
C
C-----------------------------------------------------------------------------
C    S T A R T U P:
C-----------------------------------------------------------------------------
C
C    Program startup:
C
C    1/ Call the program from the command line set to the directory containing
C       the data, assuming the PATH leads to the directory containing VKIEL.EXE
C    2/ Launch the program from an icon on the desktop
C    3/ Launch the program from any file manager
C
C    Only method 1/ assures that the program will operate directly on the
C    directory of choice.  In methods 2/ and 3/ the starting directory depends
C    on the operating system and previous usage.  It maight be necessary
C    to navigate to the directory with spectra using the SelectFile window.
C
C_____________________________________________________________________________