
\chapter{About}

\section{About GNU TeXmacs 1.0}

\begin{description}
  \item[Copyright:] (C) 1998-2001 Joris van der Hoeven.
  \item[Supported systems:] PC/Gnu-linux and Sun/OS.
  \item[Email:] ¤vdhoeven@texmacs.org¤.
  \item[Web site:] ¤http://www.texmacs.org¤.
  \item[On GNU site:] ¤http://www.gnu.org/software/texmacs¤.
  \item[Regular mail:] 
\begin{verbatim}
    Joris van der Hoeven
    Dépt. de Mathématiques (Bât. 425)
    Université Paris-Sud
    91405 Orsay Cedex
    France\end{verbatim}
\end{description}

\section{Copying policy}

{\TeXmacs} is protected by the ``GNU general public license''.
Roughly speaking, this means that you have the following rights:
\begin{itemize}
  \item You can get \TeXmacs\ for free.
  \item You can get the source code of \TeXmacs\ for free.
  \item You may modify the source code of \TeXmacs.
\end{itemize}
Moreover, you have the right to redistribute or sell \TeXmacs\ or modified
versions of \TeXmacs\ to other people AS LONG AS these copies also
fall under the GNU general public license and AS LONG AS these people
have the same rights as you do and they are informed about this.

On the other hand, \TeXmacs\ comes WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.

In the home directory (¤$TEXMACS_PATH¤) of your \TeXmacs\ distribution, %$
you should have a text file named COPYING with the complete
GNU general public license; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

\section{Help and donations}

Our copying policy allows you to support the {\TeXmacs} project in many ways.
In the \submenu{Help}{projects} and \submenu{Help}{help me} menus
we respectively explain our future plans for the program and
the ways in which you can support these plans.

Of course, the fact that we provide {\TeXmacs} for free does not mean that
we do not appreciate money donations for the project. If you feel you
can give financial or other, immaterial help, please write to
one of the addresses mentioned above.

\section{Using TeXmacs as an interface}

If you plan to write an interface between \TeXmacs\ and
a computer algebra system, please contact us.
The GNU general public license allows {\TeXmacs}
to be linked to {\em free} as well as {\em proprietary}
computer algebra systems (see ¤http://www.gnu.org¤ for precise definitions).
However, free computer algebra systems will be given a higher priority and
may benefit from extra publicity inside {\TeXmacs}.

Indeed, we are deeply convinced that free computer algebra systems
are the only acceptable ones from a mathematical point of view.
We have two main reasons for this:
\begin{itemize}
  \item Just as a mathematician should be able to build theorems on top
        of other theorems, it should be possible to freely modify and
        release algorithms in computer algebra systems.
  \item A result computed by a computer algebra system,
        whose source code is not public, can not be accepted as
        part of a mathematical proof.
\end{itemize}

\section{Thanks}

The GNU \TeXmacs\ system, which is part of the GNU project,
was designed and written by Joris van der Hoeven.
The system was inspired both by the {\TeX} system, written by D. Knuth,
and by {\sc Emacs}, written by R. Stallman. Special thanks goes to them,
as well as to the C.N.R.S. (the French national institute for
scientific research), which employs me and authorized me to
distribute this program for free.

Further thanks go to the following contributors:
\begin{itemize}
  \item Andrey Grozin for his constant help on many issues:
        interfaces to several computer algebra systems,
        support for the russian language,
        tools for the manipulation of dictionaries, etc.
  \item Jean-Claude Fernandez, Fabien Salvi and the other persons
        from the CRI for hosting and administrating {\TeXmacs}.
  \item Dan Grayson, with whose help I implemented communications with
        computer algebra systems via pipes, who provided some money
        support for {\TeXmacs}, and who made many useful comments
        and suggestions.
%% He also implemented an interface with the Macaulay2 system.
  \item David Allouche, for many patches, many bug reports and
        his constant help with the administration of TeXmacs.
  \item Karim Belabas, with whom I designed and developed
        the first protocol for interfacing {\TeXmacs} with scientific
        computation or computer algebra systems.
        He also implemented the interface with the pari system.
  \item Ralf Treinen for supporting the debian package for TeXmacs and
        for his corrections in the german dictionary.
  \item Álvaro Tejero Cantero, for setting up the TeXmacs Wiki.
  \item Christophe Merlet and Bo Forslund for their help with making
        a portable TeXmacs.spec.
  \item Stéphane Payrard, for an important bugfix for destroying windows.
  \item Dan Ignat, for translating the menus and some of
        the helpfiles into romanian.
  \item Andras Kadinger for translating the menus into hungarian.
  \item Márcio Laurini and Alexandre Taschetto de Castro
        for translating the menus into portuguese/brazilian.
  \item David Moriano Garcia for translating the menus into spanish.
  \item Harald Ellmann for translating the menus into swedish.
  \item Robert Janusz for translating the menus into polish.
  \item David Rezac for translating the menus into czech.
  \item Sylvie Lalande, Thomas Langen and Michael Schmeling for the french and
        german language supports.
  \item Loic Dachary, for his help in order to make TeXmacs accessible
        on Savannah.
  \item Bruno Haible, who helped me with porting {\TeXmacs} to the SUN system.
  \item Stefan Weinzierl, for choosing TeXmacs as an interface to
        the tybalt system.
  \item Rob Clark, for a patch which improves system time support.
  \item David Allouche, for the {\TeXmacs} icon.
  \item Jean Pierre Demailly and Yves Potin,
        for making TeXmacs part of the CNDP project to support free software.
\end{itemize}

Final thanks go to all others who have contributed to {\TeXmacs},
for instance by sending bug reports or by giving suggestions
for future releases:
  Alexandre Abbes,
  Alessio Abogani,
  Till Adam,
  Guillaume Allègre,
  David Allouche,
  Larry D'Anna,
  Eizo Akiyama,
  André Arnold,
  Uwe Assmann,
  Daniel Augot,
  Olaf Bachmann,
  Giovanni Maniscalco Basile,
  Luc Béhar,
  Paul Benham,
  Roy C. Bentley,
  Christophe Bernard,
  Karl Berry,
  Matthias Berth,
  Cédric Bertolini,
  Matthew Bettencourt,
  Anne-Laure Biolley,
  Jim Blandy,
  Thierry Bouche,
  Alexander M. Budge,
  Dominique Caron,
  António Carvalho,
  Michel Castagner,
  Topher Cawlfield,
  Carlo Cecati,
  Henri Cohen,
  Teddy Fen-Chong,
  Dominique Colnet,
  Claire M. Connelly,
  Christoph Conrad,
  Paulo Correia,
  Jason Dagit,
  Mike Davidson,
  Jean-Pierre Demailly,
  Peter Denisevich,
  Michael John Downes,
  Benjamin Drieu,
  Daniel Duparc,
  Ulf Ekström,
  Robin Fairbairns,
  Tony Falcone,
  Hilaire Fernandes,
  Jens Finke,
  Thomas Fischbacher,
  Christian Forster,
  Charlie Fortner,
  Stefan Freinatis,
  Michael P Friedlander,
  Nils Frohberg,
  Maciej Gajewski,
  Lionel Garnier,
  Björn Gohla,
  Patrick Gonzalez,
  Frédéric Grasset,
  Cyril Grunspan,
  Laurent Guillon,
  Harri Haataja,
  Irwan Hadi,
  Aaron Hammack,
  Guillaume Hanrot,
  James W. Haefner,
  Karl M. Hegbloom,
  Jochen Heinloth,
  Andreas Horn,
  Chu-Ching Huang,
  Ed Hurst,
  Benjamin T. Ingram,
  Frederic de Jaeger,
  Pierre Jarillon,
  Paul E. Johnson,
  Tim Kaulmann,
  Mukund S. Kalisi,
  Jeremy Kephart,
  Iwao Kimura,
  Simon Kirkby,
  Matthias Koeppe,
  Neel Krishnaswami,
  Friedrich Laher,
  Winter Laite,
  Russell Lang,
  Christopher Lee,
  Joerg Lippmann,
  Pierre Lorenzon,
  V.S. Lugovsky,
  Duraid Madina,
  Yael Maguire,
  Paul Magwene,
  Sylvain Marchand,
  Bernd Markgraf,
  Eric Marsden,
  Chris Marston,
  Evan Martin,
  Alisdair McDiarmid,
  Phil Mendelsohn,
  Sébastien de Menten,
  Jean-Michel Mermet,
  Herve le Meur,
  Amir Michail,
  Arkadiusz Miskiewicz,
  Sasha Mitelman,
  Dirk Moebius,
  Jack Moffitt,
  Julian Morrison,
  Nathan Myers,
  Nix N. Nix,
  Eduardo Nogueira,
  Ralf Nuetzel,
  Kostas Oikonomou,
  Pierre Pansu,
  Bernard Parisse,
  Fernández Pascual,
  Alen L. Peacock,
  François Pellegrini,
  Bernard Perrot,
  Jean Peyratout,
  Jacques Peyriere,
  Benjamin Poussin,
  Isaías V. Prestes,
  Rui Prior,
  Nguyen-Dai Quy,
  Ramakrishnan,
  Adrien Ramparison,
  Diego Restrepo,
  Christian Requena,
  Staffan Ringbom,
  Will Robinson,
  Juan Pablo Romero,
  Mike Rosellini,
  Duncan Sands,
  Breton Saunders,
  Gilles Schaeffer,
  Rainer Schöpf,
  Rui Miguel Seabra,
  Vasco Alexandre da Silva Costa,
  Marciano Siniscalchi,
  Murray Smigel,
  Luke Snow,
  Rodney Sparapani,
  Starseeker,
  Bernard Stloup,
  Peter Stoehr,
  James Su,
  Roman Svetlov,
  Pan Tadeusz,
  Dung TaQuang,
  Alexandre Taschetto de Castro,
  Gerald Teschl,
  Nicolas Thiery,
  Reuben Thomas,
  Kurt Ting,
  Janus N. Tøndering,
  Andreas Umbach,
  Miguel A. Valle,
  Rémi Vanicat,
  Harro Verkouter,
  Adam Warner,
  Thomas Wawrzinek,
  Grayson Williams,
  Sascha Ziemann,
  Reinhard Zierke,
  Paul Zimmermann.
