Version of 6 April 2020
Fix in t2a.
New t2k.

Version of 5 May 2019
Got Ranu seed to work correctly
Larger number of points (33 million) for FFT, CMP, and Q.  This will migrate to others in due time.

Version of 1 Nov 2018
Added contact information to man.pdf and readme.dtn

Version of 17 Apr 2017
Increased number of layers (to 52) in tff.
GetDat

Version of 25 Aug 2016
Fix to op and opc that keep alpha positive in calculating transmission. 
Ranu crashed with undefined variable. Cause: old numerical recipes did not save internal variables. 

Version of 18 Apr 2016
Graphical routines would fail if the number plotted on a log scale exceeded 10^100 or was smaller than 10^-100. Fixed.

Version of  Mar 2016
Add /o (output) option to KK.
Prm2Par gave nonsense; recompiling fixed it. (?!)

Version of 25 Feb 2016
Updates to ema.exe and mgt.exe
Bug fixes in fft.exe, dff.exe, kk.exe

Version of 27 July
Bridge.exe is new.
Slight improvement to bridge fitting in KK.exe.

Version of 18 June
Bug fixes in interp.exe, op.exe, cmp.exe, cmpc.exe, avg.exe, dfc.exe, and mav.exe. Mostly undefined variable errors. (Send reports!  I've starting linking so that undefined errors crash the exe file. The compiler does not check!) 

Version of 29 May
Bug fix in TFF (Nlayers was bigger than Nfiles, so LOF reading stopped early.)

Version of 17 April
Same fix in TFF, flmfit, safit, relfit, threefit

Version of 2 April
Bug fix in DFF. (undefined variable)

Version of 28 January
Add /x option to mav.exe

Version of 15 January 2015
Bug fixes in GTF, GTFc, and XRO.
All programs now double precision. 

Version of 1 September
Calculate pi to full precision (as 4.*ATAN(1.) !)
Subtract pi from phase in KK, xx2rph, etc. with /pi option. This is the "Wooten" phase.
A variety of cosmetic fixes.

Version of 5 August
avg.exe as a replacement for cmp/a

Version of 1 July
Double precision FFT needed fixing. Affects FFT, FTS, etc.

Version of 15 June
Double precision version of xro: bug fix.

Version of 10 June
Double precision MAV  and VMAV fixed up. (They were not showing data on plot.) 

Version of 28 April
Double precision versions are available in datan-dbl.zip
kkNoHi.exe does KK without high frequency extension.

Version of 8 April
Update flmfit.exe, dfc.exe, dlcalc.exe, ema.exe, tcalc.exe, TFF.exe, 
and dff.exe to allow for longer file names.

Version of 24 February 2014
Update:
q.exe (qp, ql)  Put filename only, not path, in text area.
z2w.exe         /N: do not scale by 0.01 (percent to fraction).
cmp.exe (cmpc)  Tidy up the averaging section.
kk.ese          Increase number of points in low freq extrapolation.

Version of 31 March
Update:
kk.exe          Ability to widen the gap if the xro data is too large.

Version of 8 March 2013.
Updates:
kk.exe          Kramers-Kronig analysis of R or T. Uses xro high freq extension.
kkc.exe         KK, console version. Uses xro high freq extension
t2a.exe         alpha from T. Now does what I thought it already did.

New:
ditto.exe       Copy a file. Output will be formatted in the typical way 
kkold.exe       Kramers-Kronig analysis of R or T. Uses 1/w^DE extension
kkx.exe         Kramers-Kronig transform of sigma, eps, n, k etc. Beta.
mindif.exe      Minimize the difference between two data files.
slashstar.exe   Add /* to a data file. You specify the line.
t2approx.exe    Old t2a. Approximation.
xro.exe         Compute x-ray reflectance (and n, k...) from atomic scattering data

Distribution of  17 October
Add "Fermi Liquid" to TFF
Add keyboard ability to specify overlap range in MAV (via MAV/v)
VMAV has this as default.

Distribution of  9-July-2012.
Bug fixes in TFF and DFF. 
W2L v 1.7 (*W.* in file name if output is in wavenumbers) 

Distribution of  8-June-2012.
Bug fix in TFF
Update of MAV (specify y-axis)

Version of 29-May-2012,
Big update and expansion of man.pdf.
DFF,  DFC, and OP updated.
TFF as replacement for FlmFit.
Patch renamed to Mend. (Win 7 does not like programs named patch.exe. There is a patch.bat 
   which Win 7 does not mind.)
PRM2PAR is new as helper for TFF and DFF.