--- imach/src/README.txt	2018/04/21 21:10:20	1.7
+++ imach/src/README.txt	2022/03/15 18:40:36	1.9
@@ -1,29 +1,27 @@
 Version IMaCh 0.99
-Parameter files have new undocumented parameters.
-Look at the archives of imach-users@listes.ined.fr for information.
-
-Current documentation on the web site is for 0.98 (before the
-introduction of varying covariates).
 
 Interpolated Marlov Chain (IMaCh program)
 
-This program will be licensed under the GNU GNU GENERAL PUBLIC LICENSE.
+This program is licensed under the GNU GNU GENERAL PUBLIC LICENSE.
 
-The program estimates Health Expectancies from Cross-longitudinal
-studies.
-The main publication is Lievre, A. Brouard. N, Heathcote
-Ch. Estimating Health Expectancies from Cross-longitudinal surveys,
-Mathematical Population Studies, 10(1), 2003, pp. 1-52.
+The program estimates Life Expectancies from Cross-longitudinal
+studies as well as age-specific forward and backward prevalences in each state.
+The main publications are:
+(1) Lièvre, A. Brouard. N, Heathcote Ch. Estimating Health
+Expectancies from Cross-longitudinal surveys, Mathematical Population Studies, 10(1), 2003, pp. 1-52.
+(2) Nicolas Brouard, 2019, "Theory and applications of backward probabilities and prevalences in cross-longitudinal surveys". In: Arni S. R. Srinivasa Rao (Ed.) and C.R. Rao (Ed.), Handbook of Statistics.
+Integrated population biology and modeling, Part B, Elsevier, p. 435-486.
+http://hdl.handle.net/20.500.12204/AWltfxMuXMQCvuZmm9UI
 
-To be brief, for each people interviewed we need the age and health
-status at each interview. Also the month and year of death should be
+To be brief, for each people interviewed we need the age and 
+state at each interview. Also the month and year of death should be
 known as for birth.  We model the probability to be observed in any
 state at any age via a parametric model and estimate the parameters
 and their confidence interval by maximum likelihood. Many tables and
 graphs are output in HTML. Graphs are built using gnuplot.
 
-First versions appeared around year 2000. Currently (September 2015)
-version 0.98q5 can run on any Unix, including OS/X and on Windows 10
+First versions appeared around year 2000. Currently (May 2019)
+version 0.99r19 can run on any Unix, including OS/X and on Windows 10
 (64bit) as well as Windows XP (32bit).
 
 Binaries are usually provided for OS/X (DMG for 64bit), Linux (rpm)
@@ -33,7 +31,7 @@ and Windows installer (32 and 64bit).
 STRUCTURE of the binary
 
 IMaCh is a command line program (no time for a GUI) which means that
-it can be run on a shell by $ imach foo.imach where foo.imach is your
+it can be run on a shell by "$ imach foo.imach" where foo.imach is your
 'parameter' file which is a simple text file with a few lines that
 your must edit in order to describe your data as well as your model
 line. In this parameter file you give the name and path of your data
@@ -81,10 +79,23 @@ efficient on Windows 64 and current bina
 Intel C compiler.  On OS/X the native LLVM C compiler from Apple is
 very efficient too.
 
-Usually IMaCh binaries are distributed under two subdirectories, 'bin' for the
-binaries which are imach.exe and gnuplot.exe and 'html' for some of the
-documentation, and 'mytry' in order to test the program on a parameter
-file named 'mypar.imach'.
+Usually IMaCh binaries are distributed under two subdirectories, 'bin'
+for the binaries which are imach.exe and gnuplot.exe and 'html' for
+some of the documentation, and 'mytry' in order to test the program on
+a parameter file named 'mypar.imach'. In order to use IMaCh, you need
+two text files, one is called the parameter file with extension .imach
+or .txt which contains few lines and the data file which can be juge
+according to the number of people surveyed.  You can find in the
+subdirectory doc of your installed package, some testing files like
+biaspar.imach and mypar.imach . If you edit such a parameter file, you
+will see a link to the data file, for exemple data1.txt . You can copy
+both files, parameter and data file into a private directory. Then run
+imach and drag the parameter file.
+
+You can access to the main IMaCh server at
+http://euroreves.ined.fr/imach but the main documentation is a wiki at
+http://euroreves.ined.fr/imach/wiki .  You can download the latest versions
+at http://euroreves.ined.fr/imach/Download .
 
 By default the file 'gnuplot.exe' is located on the same directory as
 imach and is used by imach with its absolute path. Thus, if you have