diff --git a/AUTHORS b/AUTHORS
index a57a6d6..bc0e319 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -8,7 +8,7 @@ Patrick H. E. Foubet <nife@seriane.fr>
         * Stack to Stack protocol developer, and much more.
 
 Christophe Ondrejec <ondrejec@seriane.fr>
-        * Administrator of the site k-nife.org.
+        * Administrator of the site nifesys.org.
         * Internationalization support head.
         * Package tester.
 
diff --git a/ChangeLog b/ChangeLog
index 0f1dd95..6faea51 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,42 +1,99 @@
 History of Nife releases :
 
+2016-08-15 - Nife 0.59 is released.
+	* Add implementation of data meta-stacks tools for context swapping :
+	  [ and ] for respectively increment and decrement the numerical stack,
+	  { and } to do theses operations with the character stack,
+	  ( and ) to do the same thing with the logical stack,
+	  and [* and ]* to operate on the three stacks.
+	* Fixed a bug causing an error with network functions netDt> and NetKey.
+	* The Nife official site is now : http://www.nifesys.org.
+
+2015-08-10 - Nife 0.55 is released.
+	* Changing the log file contents to be able to use it for debugging.
+	  The log file is in the subdirectory .nife. His name is the type
+	  .nife_PID.log, PID being its number of pid.
+	  We can display the content in real time with tail -f.
+	  The .nifeNS_pid.log and .nifeRPC_PID.log files are those of the
+	  server networks and its bodies.
+	  Log files are deleted at the end of the Nife session unless an error
+	  occured.
+	* Added "savelog function to save the logs before going out.
+	* Placing aid debugging functions. All these functions begin with the _
+ 	  character and are listed with ?libp function.
+	* Added shell script command, ex/NifeDebugTerms, to facilitate
+	  establishment and closing of the display terminals for the logs.
+	* Added the possibility, in graphic mode, to open or close
+	  terminals with keys 'home' and 'end'. These functionalities are
+	  based on performance in the window manager of the above script.
+	* Reorganization of system functions in the function stack.
+	* Improved tasks and consoles.
+	* Added the ability to execute external command interactively, with the
+	  character ! at the beginning of the line.
+
+2014-08-31 - Nife 0.51 is released.
+	* Finalising the version 1.0 of the functions dump and restore with the
+	  definition of the NBLF, Nife Binary Linkable Format.
+	* Modify some labels to clarify the perception of internal mechanisms.
+	* Some modifications to avoid unnecessary warnings at compilation.
+	* Temporary suspension of some functions related to the dynamic aspect
+	  of the language because, used improperly, it could be dangerous.
+	  These functions will be include again, but with more explanations and
+	  examples.
+
+2014-06-27 - Nife 0.49 is released.
+	* Add DEC, HEX, OCT and BIN functions to define the print mode for the
+	  integers. The default is decimal.
+	* Modify signals comportment to accept interrupt from terminal to stop
+	  execution in the main (interactive) task.
+	* Fixed an error in the case of the end: label is before the onerr: one.
+	* Fixed a bug when a signal "segmentation violation" is catched.
+	* Add some help facilities suggested by Alain Empain, until his tools
+	  are efficient in Nife.
+	* Beginning the functions dump and restore with definition of the NBLF,
+	  Nife Binary Linkable Format (just for a Request for Comments ;-).
+	* The installation has been tested by Gaetan Angely on three ARM SBCs:
+	  Raspberry Pi, Beaglebone Black, ODROID-U3 with Arch Linux ARM.
+	  All information about Arch Linux ARM at http://archlinuxarm.org/.
+	  He have compared with two Intel processors and have published a
+	  benchmak on the two mailing lists.
+
 2014-05-10 - Nife 0.47 is released.
-        * Beginning an I2C interface for Linux systems, inspired by the Linux
-          package i2c-tools.
-        * The I2C interface has been developped and tested by P. Foubet
-          with his students of ESIGETEL Villejuif, Elodie Kerfourn and Aymeric
-	  Diankouika Ntinou. They connected a Raspberry Pi with an Arduino
-	  board through the I2C bus and wrote a Nife program to highlight the
-	  data exchange between the two elements.
-	* The Nife official site is now : http://www.k-nife.org.
-        * The installation has been tested by Bernard Bonno on a Raspberry Pi
-          board Model A with Porteus ARM (based on a Slackware ARM 14.0).
+	* Beginning an I2C interface for Linux systems, inspired by the Linux
+	  package i2c-tools.
+	* The I2C interface has been developped and tested by P. Foubet
+	  with his students Elodie Kerfourn and Aymeric Diankouika. They
+	  connected a Raspberry Pi with an Arduino board through the I2C bus
+	  and wrote a Nife program to highlight the data exchange between the
+	  two elements.
+	* The installation has been tested by Bernard Bonno on a Raspberry Pi
+	  board Model A with Porteus ARM (based on a Slackware ARM 14.0).
 
 2013-09-25 - Nife 0.44 is released.
 	* Fixed a bug causing a "segmentation violation" during compilation
-          of the Nife code on some systems as Raspberry Pi A and B and others.
-          This bug was reported by Bernard Bonno during tests on a Raspberry Pi
-          Model A with 256 Mo of memory.
+	  of the Nife code on some systems as Raspberry Pi A and B and others.
+	  This bug was reported by Bernard Bonno during tests on a Raspberry Pi
+	  Model A with 256 Mo of memory.
 	* The installation has been tested by Bernard Bonno on a PC i484
-          with a Linux Porteus 2.0.
+	  with a Linux Porteus 2.0.
 	  All information about Porteus at http://www.porteus.org/.
 
 2013-09-09 - Nife 0.43 is released.
 	* Establishment of a sub-directory .nife to facilitate debugging and
-          store temporary files.
+	  store temporary files.
 	* Update some functions dependant on working directory.
 	* Fixed some bugs in the gplot tools due to new versions of gnuplot.
 	* The installation has been tested by Patrick Foubet on a Raspberry Pi
-          board Model B with standard Raspbian (Squeeze).
+	  board Model B with standard Raspbian (Squeeze).
 	  All information about the board at http://www.raspberrypi.org/faqs.
 
 2012-10-23 - Nife 0.405 is released.
-        * Fixed a bug in the data transfer protocol STSP.
-        * Adding Dt indicators in the list giving by ?n function.
-        * Fixed a bug in the netDt> function.
+	* Fixed a bug in the data transfer protocol STSP.
+	* Adding Dt indicators in the list giving by ?n function.
+	* Fixed a bug in the netDt> function.
 	* The installation has been tested by Patrick Foubet on a Beaglebone
-          board (Linux beaglebone 3.2.5+ #1 ... armv7l GNU/Linux) lended by the
-          school ESME Sudria for preparing a course on Linux drivers.
+	  board (Linux beaglebone 3.2.5+ #1 ... armv7l GNU/Linux) lended by the
+	  school ESME Sudria for preparing a course on Linux drivers.
 	  All information about the board at http://beagleboard.org/bone.
 
 2012-09-01 - Nife 0.401 is released.
@@ -77,12 +134,12 @@ History of Nife releases :
 2012-06-06 - Nife 0.320 is released.
 	* Beginning of the gplot module for use of gnuplot (www.gnuplot.info).
 	* adding theses functions :
-          - gplot and gplotM (multiple) to create gplots,
-          - gplotCmd to append text to the plot command,
-          - ?gp to list the gplots,
-          - del_gplot to delete a gplot,
-          - gplotAdd and gplotRepl (with replacement) to add values to plots,
-          - gplotClear to clear a display panel.
+	  - gplot and gplotM (multiple) to create gplots,
+	  - gplotCmd to append text to the plot command,
+	  - ?gp to list the gplots,
+	  - del_gplot to delete a gplot,
+	  - gplotAdd and gplotRepl (with replacement) to add values to plots,
+	  - gplotClear to clear a display panel.
 	* The installation has been tested by Bruno Guilbert on a Fox board G20
 	  (Debian debarm 2.6.38 with CPU Atmel AT91SAM9G20 based on ARM926EJ-S)
 	  with the students TRSE2 of Ingesup-Paris :
diff --git a/NEWS b/NEWS
index 59a105f..6faea51 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,14 @@
 History of Nife releases :
 
+2016-08-15 - Nife 0.59 is released.
+	* Add implementation of data meta-stacks tools for context swapping :
+	  [ and ] for respectively increment and decrement the numerical stack,
+	  { and } to do theses operations with the character stack,
+	  ( and ) to do the same thing with the logical stack,
+	  and [* and ]* to operate on the three stacks.
+	* Fixed a bug causing an error with network functions netDt> and NetKey.
+	* The Nife official site is now : http://www.nifesys.org.
+
 2015-08-10 - Nife 0.55 is released.
 	* Changing the log file contents to be able to use it for debugging.
 	  The log file is in the subdirectory .nife. His name is the type
@@ -11,7 +20,7 @@ History of Nife releases :
 	  occured.
 	* Added "savelog function to save the logs before going out.
 	* Placing aid debugging functions. All these functions begin with the _
-	  character and are listed with ?libp function.
+ 	  character and are listed with ?libp function.
 	* Added shell script command, ex/NifeDebugTerms, to facilitate
 	  establishment and closing of the display terminals for the logs.
 	* Added the possibility, in graphic mode, to open or close
@@ -58,33 +67,33 @@ History of Nife releases :
 	  and wrote a Nife program to highlight the data exchange between the
 	  two elements.
 	* The installation has been tested by Bernard Bonno on a Raspberry Pi
-          board Model A with Porteus ARM (based on a Slackware ARM 14.0).
+	  board Model A with Porteus ARM (based on a Slackware ARM 14.0).
 
 2013-09-25 - Nife 0.44 is released.
 	* Fixed a bug causing a "segmentation violation" during compilation
-          of the Nife code on some systems as Raspberry Pi A and B and others.
-          This bug was reported by Bernard Bonno during tests on a Raspberry Pi
-          Model A with 256 Mo of memory.
+	  of the Nife code on some systems as Raspberry Pi A and B and others.
+	  This bug was reported by Bernard Bonno during tests on a Raspberry Pi
+	  Model A with 256 Mo of memory.
 	* The installation has been tested by Bernard Bonno on a PC i484
-          with a Linux Porteus 2.0.
+	  with a Linux Porteus 2.0.
 	  All information about Porteus at http://www.porteus.org/.
 
 2013-09-09 - Nife 0.43 is released.
 	* Establishment of a sub-directory .nife to facilitate debugging and
-          store temporary files.
+	  store temporary files.
 	* Update some functions dependant on working directory.
 	* Fixed some bugs in the gplot tools due to new versions of gnuplot.
 	* The installation has been tested by Patrick Foubet on a Raspberry Pi
-          board Model B with standard Raspbian (Squeeze).
+	  board Model B with standard Raspbian (Squeeze).
 	  All information about the board at http://www.raspberrypi.org/faqs.
 
 2012-10-23 - Nife 0.405 is released.
-        * Fixed a bug in the data transfer protocol STSP.
-        * Adding Dt indicators in the list giving by ?n function.
-        * Fixed a bug in the netDt> function.
+	* Fixed a bug in the data transfer protocol STSP.
+	* Adding Dt indicators in the list giving by ?n function.
+	* Fixed a bug in the netDt> function.
 	* The installation has been tested by Patrick Foubet on a Beaglebone
-          board (Linux beaglebone 3.2.5+ #1 ... armv7l GNU/Linux) lended by the
-          school ESME Sudria for preparing a course on Linux drivers.
+	  board (Linux beaglebone 3.2.5+ #1 ... armv7l GNU/Linux) lended by the
+	  school ESME Sudria for preparing a course on Linux drivers.
 	  All information about the board at http://beagleboard.org/bone.
 
 2012-09-01 - Nife 0.401 is released.
@@ -125,12 +134,12 @@ History of Nife releases :
 2012-06-06 - Nife 0.320 is released.
 	* Beginning of the gplot module for use of gnuplot (www.gnuplot.info).
 	* adding theses functions :
-          - gplot and gplotM (multiple) to create gplots,
-          - gplotCmd to append text to the plot command,
-          - ?gp to list the gplots,
-          - del_gplot to delete a gplot,
-          - gplotAdd and gplotRepl (with replacement) to add values to plots,
-          - gplotClear to clear a display panel.
+	  - gplot and gplotM (multiple) to create gplots,
+	  - gplotCmd to append text to the plot command,
+	  - ?gp to list the gplots,
+	  - del_gplot to delete a gplot,
+	  - gplotAdd and gplotRepl (with replacement) to add values to plots,
+	  - gplotClear to clear a display panel.
 	* The installation has been tested by Bruno Guilbert on a Fox board G20
 	  (Debian debarm 2.6.38 with CPU Atmel AT91SAM9G20 based on ARM926EJ-S)
 	  with the students TRSE2 of Ingesup-Paris :
diff --git a/README b/README
index fcc7c87..ea11cda 100644
--- a/README
+++ b/README
@@ -79,25 +79,25 @@ How to compile and install nife
 
 Web Page
 
-        http://www.k-nife.org
+        http://www.nifesys.org
 
 
 Mailing List and Bug Reports
 
-        k-nife.org hosts all the nife-related mailing-lists.
+        nifesys.org hosts all the nife-related mailing-lists.
 
         + nife-mailing-list@googlegroups.com is the list used by the people
           that make Nife and a general development discussion list, with
           moderate traffic.
 
         To subscribe, go directely to :
-	http://k-nife.org/mailing_list.html
+	http://nifesys.org/mailing_list.html
 
-        + nife-project@mailman.k-nife.org is the list reserved for people
+        + nife-project@mailman.nifesys.org is the list reserved for people
 	  who want to discuss Nife in French, with also a moderate traffic.
 
         To subscribe, go directely to :
-	http://mailman.k-nife.org/mailman/listinfo/nife-project
+	http://mailman.nifesys.org/mailman/listinfo/nife-project
 
         For general bug reports, send a description of the problem to
         nife@seriane.fr or directly to the development list.
diff --git a/README.md b/README.md
index 36307fe..ea11cda 100644
--- a/README.md
+++ b/README.md
@@ -79,34 +79,34 @@ How to compile and install nife
 
 Web Page
 
-        http://www.k-nife.org
+        http://www.nifesys.org
 
 
 Mailing List and Bug Reports
 
-        k-nife.org hosts all the nife-related mailing-lists.
+        nifesys.org hosts all the nife-related mailing-lists.
 
-        + nife-mailing-list AT googlegroups.com is the list used by the people
+        + nife-mailing-list@googlegroups.com is the list used by the people
           that make Nife and a general development discussion list, with
           moderate traffic.
 
         To subscribe, go directely to :
-	http://k-nife.org/mailing_list.html
+	http://nifesys.org/mailing_list.html
 
-        + nife-project AT mailman.k-nife.org is the list reserved for people
+        + nife-project@mailman.nifesys.org is the list reserved for people
 	  who want to discuss Nife in French, with also a moderate traffic.
 
         To subscribe, go directely to :
-	http://mailman.k-nife.org/mailman/listinfo/nife-project
+	http://mailman.nifesys.org/mailman/listinfo/nife-project
 
         For general bug reports, send a description of the problem to
-        nife AT seriane POINT fr or directly to the development list.
+        nife@seriane.fr or directly to the development list.
 
 
 Current Status
 
         nife is still in beta version.
 
-   Patrick Foubet (nife AT seriane POINT fr)
+   Patrick Foubet (nife@seriane.fr)
 
 
diff --git a/configure b/configure
index 564e196..1cd79fc 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for nife 0.51.
+# Generated by GNU Autoconf 2.69 for nife 0.59.
 #
 # Report bugs to <nife@seriane.fr>.
 #
@@ -580,8 +580,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='nife'
 PACKAGE_TARNAME='nife'
-PACKAGE_VERSION='0.51'
-PACKAGE_STRING='nife 0.51'
+PACKAGE_VERSION='0.59'
+PACKAGE_STRING='nife 0.59'
 PACKAGE_BUGREPORT='nife@seriane.fr'
 PACKAGE_URL=''
 
@@ -1262,7 +1262,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures nife 0.51 to adapt to many kinds of systems.
+\`configure' configures nife 0.59 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1328,7 +1328,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of nife 0.51:";;
+     short | recursive ) echo "Configuration of nife 0.59:";;
    esac
   cat <<\_ACEOF
 
@@ -1415,7 +1415,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-nife configure 0.51
+nife configure 0.59
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1838,7 +1838,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by nife $as_me 0.51, which was
+It was created by nife $as_me 0.59, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2653,7 +2653,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='nife'
- VERSION='0.51'
+ VERSION='0.59'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -5480,7 +5480,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by nife $as_me 0.51, which was
+This file was extended by nife $as_me 0.59, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -5546,7 +5546,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-nife config.status 0.51
+nife config.status 0.59
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index 91c2b46..79f95b8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.67])
-AC_INIT([nife], [0.51], [nife@seriane.fr])
+AC_INIT([nife], [0.59], [nife@seriane.fr])
 AM_INIT_AUTOMAKE
 
 AC_CONFIG_SRCDIR([src/tasks.c])
diff --git a/src/conf.h b/src/conf.h
index e22e6c8..08f3d2e 100644
--- a/src/conf.h
+++ b/src/conf.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -20,7 +20,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>
 #ifdef HAVE_CONFIG_H
 #include "../config.h"
 #else
-#define VERSION "0.55"
+#define VERSION "0.59"
 #endif
 
 #ifdef HAVE_COMEDILIB_H
diff --git a/src/debug.c b/src/debug.c
index 8671974..409d99f 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/debug.h b/src/debug.h
index 8c97a72..da99685 100644
--- a/src/debug.h
+++ b/src/debug.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/dev.c b/src/dev.c
index ec15eae..88530da 100644
--- a/src/dev.c
+++ b/src/dev.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/dev.h b/src/dev.h
index a436444..00a4e4f 100644
--- a/src/dev.h
+++ b/src/dev.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/err.c b/src/err.c
index 78805b8..dea8f00 100644
--- a/src/err.c
+++ b/src/err.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -119,10 +119,11 @@ static char *TabErr[] = {
 	"I2C read failed",
 	"binary dump error",
 	"binary restore error",
-	"-",                    /* 60 */
+	"meta-stack size limit reached",                /* 60 */
+	"no previous stack",
         "-"
 };
-#define ERR_MAX 59
+#define ERR_MAX 61
 
 void stopErr(char *M, char *F)
 {
diff --git a/src/err.h b/src/err.h
index f5a013c..1aa9821 100644
--- a/src/err.h
+++ b/src/err.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/foncs.c b/src/foncs.c
index 444b681..498966b 100644
--- a/src/foncs.c
+++ b/src/foncs.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/foncs.h b/src/foncs.h
index 662f72d..ae095f0 100644
--- a/src/foncs.h
+++ b/src/foncs.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/gplot.c b/src/gplot.c
index 837e872..a099cd0 100644
--- a/src/gplot.c
+++ b/src/gplot.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/gplot.h b/src/gplot.h
index e2c267e..6cedbfc 100644
--- a/src/gplot.h
+++ b/src/gplot.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/help.c b/src/help.c
index 55b03ff..532b77b 100644
--- a/src/help.c
+++ b/src/help.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/help.h b/src/help.h
index 1a01c2b..ab1e272 100644
--- a/src/help.h
+++ b/src/help.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/histo.c b/src/histo.c
index 0d91888..64c7273 100644
--- a/src/histo.c
+++ b/src/histo.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/histo.h b/src/histo.h
index df7b452..8e1146c 100644
--- a/src/histo.h
+++ b/src/histo.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/i2c.c b/src/i2c.c
index 21c036a..c24b33d 100644
--- a/src/i2c.c
+++ b/src/i2c.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/i2c.h b/src/i2c.h
index c1a5a96..7d6a62d 100644
--- a/src/i2c.h
+++ b/src/i2c.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/lib.c b/src/lib.c
index e2610a3..35b11f7 100644
--- a/src/lib.c
+++ b/src/lib.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -274,6 +274,20 @@ void IF_show_libusr(void)
    Show_library(triList(F_USR));
 }
 
+void IF_new_stackAll(void)
+{
+    IF_new_stackN();
+    IF_new_stackC();
+    IF_new_stackL();
+}
+
+void IF_old_stackAll(void)
+{
+    IF_old_stackN();
+    IF_old_stackC();
+    IF_old_stackL();
+}
+
 void initLib(void)
 {
     addFonc(".",IF_point);
@@ -369,6 +383,15 @@ void initLib(void)
     addFonP("_?ls",IFD_show_stackL);
     addFonc("?s",IF_show_stack);
     addFonP("_?s",IFD_show_stack);
+    addFonc("?ms",IF_show_TStacks);
+    addFonc("[",IF_new_stackN);
+    addFonc("]",IF_old_stackN);
+    addFonc("{",IF_new_stackC);
+    addFonc("}",IF_old_stackC);
+    addFonc("(",IF_new_stackL);
+    addFonc(")",IF_old_stackL);
+    addFonc("[*",IF_new_stackAll);
+    addFonc("]*",IF_old_stackAll);
     /* addFonc("?libX",show_lib_addr); for internal debugging */
     addFonc("?libs",IF_show_liball);
     addFonc("?lib",IF_show_libstd);
diff --git a/src/lib.h b/src/lib.h
index 7fa4af7..221db79 100644
--- a/src/lib.h
+++ b/src/lib.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/libmath.c b/src/libmath.c
index c7deec1..6125f29 100644
--- a/src/libmath.c
+++ b/src/libmath.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/libmath.h b/src/libmath.h
index 4cf4436..00b194f 100644
--- a/src/libmath.h
+++ b/src/libmath.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/libmathc99.c b/src/libmathc99.c
index 87f82b9..17d19e4 100644
--- a/src/libmathc99.c
+++ b/src/libmathc99.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/mth.c b/src/mth.c
index c77cc4d..12a958c 100644
--- a/src/mth.c
+++ b/src/mth.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -182,6 +182,15 @@ void TH_init(void)
 
 
 #else /* NOT _MULTI_THREADING_ */
+/* meta-stacks */
+void * G_TStackN[LSTACKS];
+char ** G_TStackC[LSTACKS];
+int  G_TiStackC[LSTACKS];
+bool * G_TStackL[LSTACKS];
+int G_TiStackL[LSTACKS];
+int G_i_TStackN=0;
+int G_i_TStackC=0;
+int G_i_TStackL=0;
 
 void * G_StackN = VIDE;
 int G_Double=0;  /* 0 si LONG, 1 si DOUBLE */
@@ -193,9 +202,11 @@ short G_VARS=1,  /* 0 VAR_OFF , 1 VAR_DOWN (default), 2 VAR_UP */
       G_FCT_TYP=0;  /* 0 None (default) , 1 Lib Fct , 2 User Fct */
 void * G_F_INS=VIDE; /* fct lib ou usr a installer */
 uint32_t G_NetKey=0;
-bool G_stackL[LSTACKL];
+bool G_stackL0[LSTACKL];
+bool * G_stackL = G_stackL0;
 int G_i_stackL=0;
-char * G_stackC[LSTACKC];
+char * G_stackC0[LSTACKC];
+char ** G_stackC = G_stackC0;;
 int G_i_stackC=0;
 char G_bufC[MAXSTRING];
 short G_Run=1;
diff --git a/src/mth.h b/src/mth.h
index d677719..e5de17b 100644
--- a/src/mth.h
+++ b/src/mth.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -27,6 +27,7 @@ extern void TH_init(void);
 
 #define LSTACKL 512
 #define LSTACKC 512
+#define LSTACKS 512
 #define MAXSTRING 512
 #define NBTRSUITE 10
 #define LBUF 512
@@ -110,6 +111,14 @@ extern pthread_key_t k_Base, k_StkN, k_FIns, k_NetK, k_NLig, k_NTab, k_Vars,
 #define ENV_INT (jmp_buf*)pthread_getspecific(k_EnvI)
 
 #else /* *************** NOT _MULTI_THREADING_ ******************** */
+extern void * G_TStackN[];
+extern char ** G_TStackC[];
+extern int G_TiStackC[];
+extern bool * G_TStackL[];
+extern int G_TiStackL[];
+extern int G_i_TStackN;
+extern int G_i_TStackC;
+extern int G_i_TStackL;
 
 extern void * G_StackN;
 extern int G_Double;
@@ -121,9 +130,9 @@ extern short G_VARS;
 extern short G_FCT_TYP;
 extern void * G_F_INS;
 extern uint32_t G_NetKey;
-extern bool G_stackL[];
+extern bool * G_stackL;
 extern int G_i_stackL;
-extern char * G_stackC[];
+extern char ** G_stackC;
 extern int G_i_stackC;
 extern char G_bufC[];
 extern short G_Run;
diff --git a/src/net.c b/src/net.c
index 8f08497..3c7176e 100644
--- a/src/net.c
+++ b/src/net.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -257,14 +257,28 @@ char * b, *f;
    while (1) {
      if (read(s,(void*)b,1) <= 0) break;
      if (*b == NET_EOM) break;
+     if (b == f) break;
      b++;
-     if (b>f) { b--; break; }
    }
    if (*b != NET_EOM) return -1;
    b++;
    return(b-NET_BUF);
 }
 
+static int readMess2(int s, int n)
+{
+char * b, *f;
+   b = NET_BUF;
+   f = b + n;
+   while (1) {
+     if (read(s,(void*)b,1) <= 0) break;
+     b++;
+     if (b == f) break;
+   }
+   if (*b != NET_EOM) return -1;
+   return(n);
+}
+
 static void readAff(int s, char C)
 {
 char  b[2];
@@ -791,7 +805,7 @@ long long v;
    if (NET) {
       if (connSock()) return;
       sendGetStd(Code);
-      if (readMess(Sock) != 2+sizeof(v)) { messErr(35); return; }
+      if (readMess2(Sock,(2+sizeof(v))) != 2+sizeof(v)) { messErr(35); return; }
       close(Sock);
       if (*NET_BUF != (Code+1))  { messErr(40); return; }
       bcopy((void*)(NET_BUF+1),(void*)&v,sizeof(v));
diff --git a/src/net.h b/src/net.h
index 473f980..7d5baa2 100644
--- a/src/net.h
+++ b/src/net.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/nife.c b/src/nife.c
index 459f8a1..f28b769 100644
--- a/src/nife.c
+++ b/src/nife.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/nife.h b/src/nife.h
index 375f8ee..4694ba8 100644
--- a/src/nife.h
+++ b/src/nife.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/nife.hlp b/src/nife.hlp
index 18d755f..9a55dc8 100644
--- a/src/nife.hlp
+++ b/src/nife.hlp
@@ -3,12 +3,12 @@
  begins a string wich is terminated by itself. The first blank is a separator.
  The character \ masks the character " as end of string.
 ' : { string -- }
- begins, into a function (beetween : and ;), a string which represents a name of
+ begins, into a function (between : and ;), a string which represents a name of
  a user function, or a variable. This string will be interpreted and executed 
  during the function execution.
  There is no verification : if the name does not exist, it does nothing.
 ` : { string -- }
- begins, into a function (beetween : and ;), a string which represents a name of
+ begins, into a function (between : and ;), a string which represents a name of
  a user function, or a variable. This string will be interpreted and executed 
  during the function execution. At the first time the code is updated if the
  function or the variable is found.
@@ -16,7 +16,7 @@
 "cat : { str1 str2 -- 'str1str2' }
  catenates the two elements on the top string stack entry.
 "cats : { str1 str2 -- 'str1 str2' }
- catenates the two elements on the top string stack entry with a space beetween.
+ catenates the two elements on the top string stack entry with a space between.
 "date  : { -- date_string }
  puts the date string (JJ/MM/AAAA) on the top string stack entry.
 "drop : { str1 -- }
@@ -193,9 +193,21 @@
 ?t/f : ( bool -- )
  displays and removes the top logical stack entry.
 ?vars :
- display the list of constants of the system environment.
+ displays the list of constants of the system environment.
 DEBUG_I/O :
- toggle to set debug mode on or off.
+ toggle to set debug mode on or off. All debug functions begin whith '_'.
+ See ?libP list to get all the functions.
+ In an X11 environment, it is possible to display debug terminals in the same
+ time than the main one.
+ To activate or refresh displays of the log files press the "home" key.
+ Pressing the "end" key will close all of them.
+ You can also :
+ 1°) open a shell with 'sh' command,
+ 2°) execute 'ex/NifeDebugTerms -r' to start display terminals,
+ 3°) type 'exit' to return to Nife !
+ After the end of Nife, type 'ex/NifeDebugTerms -s' to close the displays.
+ The script NifeDebugTerms have been made for the Gnome window-manager. But
+ it's easy to adapt for others environments.
 DEC :
  sets the default print mode for integers to decimal.
 HEX :
@@ -277,7 +289,8 @@ help :
  ( -- ) for booleans.
  The "--" represents the execution. So before it, what it's necessary for the
  function (used during execution), and after it what the function products.
- If a stack is not used there is nothing about it. Here, "help" use no stack.
+ If a stack is not used there is nothing about it. Here, the "help" function
+ don't use any stack.
 ls_clear : ( bool1 bool2 ... boolN -- )
  clears the logical stack.
 cs_clear : { str1 ... strn -- }
@@ -368,13 +381,13 @@ vers : [ -- version ]
 ?console : [ n -- ]
  displays the background console of task number n.
 ?f :
- display the function stack.
+ displays the function stack.
 ?t :
- display the task stack.
+ displays the task stack.
 ?task_run : [ n -- ] ( -- true/false )
  tests if the task number n is running and put a boolean on the logical stack.
 ?v :
- display the variable stack.
+ displays the variable stack.
 Task : [ -- no_task ]
  creates a task from a function. The name of the function must following it.
  The avaibles names are thoses giving by ?f. In success, the task number is on
@@ -390,18 +403,18 @@ Var :
 again :
  use in function programmation to create an infinite loop. For example :
  : f1 ... begin  ...  again ... ;
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 begin :
  use in function programmation to create a loop. For example :
  : f1 ... begin  ... [condition] while ... repeat ... ;
  : f2 ... begin  ... [condition] until ... ;
  or infinite loop :
  : f3 ... begin  ...  again ... ;
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 break :
  use in function programmation to exit a loop. For example :
  : f1 ... begin  ... [condition] if ... break then ... again ... ;
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 del_func :
  delete the more recent version of a function.
  The name of the function must follow this instruction.
@@ -420,7 +433,7 @@ else :
  toto 1 > if 12 else -7 then
  At execution time, if toto is greater than 1 12 is put on the stack else -7 is
  put. Then dup is executed.
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 fdrop :
  removes the top function stack entry. In fact, the last function created.
 fscan :
@@ -431,7 +444,7 @@ if :
  toto 1 > if 12 else -7 then
  At execution time, if toto is greater than 1 12 is put on the stack else -7 is
  put. Then dup is executed.
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 in :
  used to complete the install commands.
  Example : install f1 in var
@@ -454,11 +467,11 @@ load :
  loads a source file taking the name of the file on the top of character stack.
 myself :
  use in a function definition to call the function herself (recursive case).
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 repeat :
  use in function programmation to create a loop. For example :
  : fonction ... begin  ... [condition] while ... repeat ... ;
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 reset_var :
  resets a variable. The name of the variable must follow this instruction.
 return :
@@ -470,11 +483,11 @@ then :
  toto 1 > if 12 else -7 then
  At execution time, if toto is greater than 1 12 is put on the stack else -7 is
  put. Then dup is executed.
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 until :
  use in function programmation to create a loop. For example :
  : f1 ... begin  ... [condition] until ... ;
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 var_down :
  set DOWN execution of variables.
  To execute an instruction seach first in user functions, and then in system
@@ -490,7 +503,7 @@ var_up :
 while :
  use in function programmation to create a loop. For example :
  : fonction ... begin  ... [condition] while ... repeat ... ;
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 vdrop :
  removes the top variable stack entry. In fact, the last variable created.
 >csv [ tab1 tab2 ... tabn n -- ] { "filename;libtabn; ... ;libtab1" -- }
@@ -498,19 +511,19 @@ vdrop :
 >net : [ E1 E2 ... En n -- ]
  transfert the n elements from local stack to Net stack using NetKey.
 ?n :
- display the Net informations.
+ displays the Net informations.
 ?ns :
- display the Net stack using NetKey.
+ displays the Net stack using NetKey.
 ndepth : [ -- Net_Stack_Depth ]
  returns the number of entries on the Net stack using NetKey.
 NetKey : [ key -- ]
- change the value of NetKey. It is a 32 bits INTEGER.
+ changes the value of NetKey. It is a 32 bits INTEGER.
 NetErr : [ -- err_value ]
- put the Net Error value on the top of the stack. It is the negative of NetKey!
+ puts the Net Error value on the top of the stack. It is the negative of NetKey!
 NetServer : { "ServerName" -- }
- change the default NetServer (localhost).
+ changes the default NetServer (localhost).
 ndrop :
- drop the elements on the Net stack using NetKey.
+ drops the elements on the Net stack using NetKey.
 net> : [ -- E1 E2 ... En ]
  transfert all elements from Net stack to local stack using NetKey.
 netDt> : [ -- dt ]
@@ -564,7 +577,7 @@ do : [ limit val -- ]
  a loop with an index going from 5 to 1 decremented by 1 (i = 5,4,3,2,1).
  : f2 15 1 do  ... 3 +loop ... ; 
  a loop with an index going from 1 to 15 incremented by 3 (i = 1,4,7,10,13).
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 loop :
  use in function programmation to create an auto-convergent loop with do using
  the default 1 by 1 progression. For example :
@@ -572,26 +585,26 @@ loop :
  a loop with an index going from 0 to 4 incremented by 1 (i = 0,1,2,3,4).
  : f 0 5 do  ... loop ... ; 
  a loop with an index going from 5 to 1 decremented by 1 (i = 5,4,3,2,1).
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 +loop : [ inc -- ]
  use in function programmation to create a loop with do using the value inc for
  incrementation. For example :
  : f 15 1 do  ... 3 +loop ... ; 
  a loop with an index going from 1 to 15 incremented by 3 (i = 1,4,7,10,13).
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 ndo : [ n -- ]
  returns the number of do-loop in the running context.
  It's usefull before using the indexes I J or K.
 I : [ -- val ]
  returns the value of the index of the current do-loop.
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 J : [ -- val ]
  returns the value of the index of the do-loop containing the current one.
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 K : [ -- val ]
  returns the value of the index of the second level do-loop containing the
  current one.
- This must be done into a function (beetween : and ;).
+ This must be done into a function (between : and ;).
 do_next : [ -- ]
  free-context instruction to bypass the end of a loop and go to the next step.
 do_leave : [ -- ]
@@ -641,18 +654,18 @@ cos : [ v -- cos(v) ]
 sin : [ v -- sin(v) ]
  compute the sinus of the value on the top of the stack.
 onerr: :
- defines, into a function (beetween : and ;), a label for programming an errors
+ defines, into a function (between : and ;), a label for programming an errors
  treatment in case of an error occurs.
 end: :
- defines, into a function (beetween : and ;), a label for programming a end
+ defines, into a function (between : and ;), a label for programming a end
  treatment. In case of an error occurs, theses instructions will be executed if
  this label is AFTER the onerr: label.
 goto_end :
- instruction, into a function (beetween : and ;), to go to the end: label.
+ instruction, into a function (between : and ;), to go to the end: label.
 ?err : ( -- T/F )
  tests if an error have occured and put true or false, on the logical stack.
 ?lasterr :
- displays the last error elements.
+ displays the elements of last error catched by an onerr: label.
 messerr : [ n -- ] { -- "error message" }
  puts on the character stack the error message number n.
 noerr : [ -- n ]
@@ -670,11 +683,42 @@ i2c_read : [ Offset Address I2C-ID -- Value ]
 dump :
  dumps all things in Nife. The name of the file must follow this instruction.
  The contents is not in Nife code, but in Nife Binary Linkable Format (NBLF).
+ So, the extension ".nblf" will be add automatically to the file name.
  This format depends on Scs key and the version of Nife. That's mean that a such
  file can be used in an environment with same Scs and same Nife version. It does
  not depend on architecture (Intel, ARM, ...) or processor size (32 or 64 bits).
 restore :
  restores a dumped file. The name of the file must follow this instruction.
+ The extension ".nblf" will be add automatically to the file name.
  See dump for more details.
-
+"saveLog : { "filename" -- }
+ saves the log and debug file as filename, in the current directory.
+[ :
+ increment the numerical meta-stack. This operation leave the current stack in
+ his state and create a new one, or reuse it if previously initialised.
+] :
+ decrement the numerical meta-stack. This operation leave the current stack in
+ his state and use the previous. All data on the previous stack are retrieved.
+{ :
+ increment the character meta-stack. This operation leave the current stack in
+ his state and create a new one, or reuse it if previously initialised.
+} :
+ decrement the character meta-stack. This operation leave the current stack in
+ his state and use the previous. All data on the previous stack are retrieved.
+( :
+ increment the logical meta-stack. This operation leave the current stack in
+ his state and create a new one, or reuse it if previously initialised.
+) :
+ decrement the logical meta-stack. This operation leave the current stack in
+ his state and use the previous. All data on the previous stack are retrieved.
+[* :
+ increment the all data meta-stacks (numerical, character and logical). This
+ operation leave the currents stacks in their state and create three new one, or
+ reuse if previously initialised.
+]* :
+ increment the all data meta-stacks (numerical, character and logical). This
+ operation leave the currents stacks in their state and use the previous. All
+ data on the previous stacks are retrieved.
+?ms :
+ display the indices of meta-stacks. The first is 1.
 
diff --git a/src/scs.c b/src/scs.c
index a13a664..95e12b5 100644
--- a/src/scs.c
+++ b/src/scs.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/scs.h b/src/scs.h
index 52a2a35..89746df 100644
--- a/src/scs.h
+++ b/src/scs.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/stackC.c b/src/stackC.c
index 6481828..cddb0bb 100644
--- a/src/stackC.c
+++ b/src/stackC.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -288,3 +288,32 @@ uint32_t n=0, i, j;
     dump_rest_pr(1,n,"character");
 }
 
+/* gestion des meta-stacks */
+
+void IF_new_stackC(void)
+{
+  if (G_i_TStackC == LSTACKS) {
+       messErr(60); return;
+  }
+  G_TiStackC[G_i_TStackC] = i_StackC;
+  G_TStackC[G_i_TStackC++] = stackC;
+  stackC = G_TStackC[G_i_TStackC];
+  i_StackC = G_TiStackC[G_i_TStackC];
+  if (stackC == (char **)0) {
+     if ((stackC = (char**)malloc(sizeof(char**)*LSTACKC)) == NULL)
+          stopErr("IF_new_stackC","malloc");
+     i_StackC=0;
+  }
+}
+
+void IF_old_stackC(void)
+{
+  if (G_i_TStackC == 0) {
+       messErr(61); return;
+  }
+  G_TiStackC[G_i_TStackC] = i_StackC;
+  G_TStackC[G_i_TStackC--] = stackC;
+  stackC = G_TStackC[G_i_TStackC];
+  i_StackC = G_TiStackC[G_i_TStackC];
+}
+
diff --git a/src/stackC.h b/src/stackC.h
index c766242..47b496e 100644
--- a/src/stackC.h
+++ b/src/stackC.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -41,4 +41,8 @@ extern char * restore_eltC(int fd);
 extern void dump_stackC(int fd);
 extern void restore_stackC(int fd);
 
+/* meta-stacks */
+extern void IF_new_stackC(void);
+extern void IF_old_stackC(void);
+
 #endif
diff --git a/src/stackF.c b/src/stackF.c
index 7116a08..7d5e4f3 100644
--- a/src/stackF.c
+++ b/src/stackF.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/stackF.h b/src/stackF.h
index c8e8932..536c0a5 100644
--- a/src/stackF.h
+++ b/src/stackF.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/stackL.c b/src/stackL.c
index 092f227..40d11a3 100644
--- a/src/stackL.c
+++ b/src/stackL.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -17,6 +17,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>
 #include "conf.h"
 
 #include <stdio.h>
+#include <stdlib.h>
 
 #include "nife.h"
 #include "mth.h"
@@ -206,3 +207,33 @@ uint32_t n=0;
     }
     dump_rest_pr(1,n,"logical");
 }
+
+/* gestion des meta-stacks */
+
+void IF_new_stackL(void)
+{
+  if (G_i_TStackL == LSTACKS) {
+       messErr(60); return;
+  }
+  G_TiStackL[G_i_TStackL] = i_StackL;
+  G_TStackL[G_i_TStackL++] = stackL;
+  stackL = G_TStackL[G_i_TStackL];
+  i_StackL = G_TiStackL[G_i_TStackL];
+  if (stackL == (bool *)0) {
+     if ((stackL = (bool*)malloc(sizeof(bool*)*LSTACKL)) == NULL)
+          stopErr("IF_new_stackL","malloc");
+     i_StackL=0;
+  }
+}
+
+void IF_old_stackL(void)
+{
+  if (G_i_TStackL == 0) {
+       messErr(61); return;
+  }
+  G_TiStackL[G_i_TStackL] = i_StackL;
+  G_TStackL[G_i_TStackL--] = stackL;
+  stackL = G_TStackL[G_i_TStackL];
+  i_StackL = G_TiStackL[G_i_TStackL];
+}
+
diff --git a/src/stackL.h b/src/stackL.h
index 8c3601e..f680385 100644
--- a/src/stackL.h
+++ b/src/stackL.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -41,5 +41,8 @@ extern void IFD_show_stackL(void);
 extern void dump_stackL(int fd);
 extern void restore_stackL(int fd);
 
+/* meta-stacks */
+extern void IF_new_stackL(void);
+extern void IF_old_stackL(void);
 
 #endif
diff --git a/src/stackN.c b/src/stackN.c
index 3b06486..48b5d46 100644
--- a/src/stackN.c
+++ b/src/stackN.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -2079,3 +2079,30 @@ void * M;
     dump_rest_pr(1,n,"numerical");
 }
 
+/* gestion des meta-stacks */
+
+void IF_new_stackN(void)
+{
+  if (G_i_TStackN == LSTACKS) {
+       messErr(60); return;
+  }
+  G_TStackN[G_i_TStackN++] = StackN;
+  StackN = G_TStackN[G_i_TStackN];
+}
+
+void IF_old_stackN(void)
+{
+  if (G_i_TStackN == 0) {
+       messErr(61); return;
+  }
+  G_TStackN[G_i_TStackN--] = StackN;
+  StackN = G_TStackN[G_i_TStackN];
+}
+
+void IF_show_TStacks(void)
+{
+    printf("Indices of meta-stacks :\n");
+    printf("Numerical stack = %d\n",G_i_TStackN+1);
+    printf("Character stack = %d\n",G_i_TStackC+1);
+    printf("Logical stack   = %d\n",G_i_TStackL+1);
+}
diff --git a/src/stackN.h b/src/stackN.h
index 82c87af..8362a1a 100644
--- a/src/stackN.h
+++ b/src/stackN.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
@@ -134,4 +134,10 @@ extern int NetDepth(uint32_t k);
 extern void IF_show_netStack(uint32_t k);
 extern void IF_netDrop(uint32_t k);
 
+/* meta-stacks */
+extern void IF_new_stackN(void);
+extern void IF_old_stackN(void);
+extern void IF_show_TStacks(void);
+
+
 #endif
diff --git a/src/stackV.c b/src/stackV.c
index 2a869c1..aa202a2 100644
--- a/src/stackV.c
+++ b/src/stackV.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/stackV.h b/src/stackV.h
index a323d4d..c32c80d 100644
--- a/src/stackV.h
+++ b/src/stackV.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/tasks.c b/src/tasks.c
index 9b4fd46..397046f 100644
--- a/src/tasks.c
+++ b/src/tasks.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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
diff --git a/src/tasks.h b/src/tasks.h
index ec0c23d..19881f2 100644
--- a/src/tasks.h
+++ b/src/tasks.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2015  Patrick H. E. Foubet - S.E.R.I.A.N.E.
+/* Copyright (C) 2011-2016  Patrick H. E. Foubet - S.E.R.I.A.N.E.
 
 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