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                       THE LICENCE OF CSTeX
   ==============================================================
   Petr Olsak                                       Dec. 12. 1998

Preamble
--------
 
The CSTeX package is build from sub-packages (we'll call modules).
Each module can be authorized by different author(s) and licensed by
different licence. The aim of this document is to distinguish between
"required" modules (if these modules are not installed, the whole
package cannot be called CSTeX) and "optional" modules (usually
distributed with some implementation of TeX and CSTeX).  A good news
is, that all "required" modules are licensed by license compatible
with common licenses of free software. The "optional" modules may or
may not have this feature.

This document quotes the sources of the original (Czech and/or English)
license texts for each module. This document itself is translated into
Czech (see license.cz file). However, only the English original of this
document (this file) has the legal power.

Notice: The "current administrator" of CSTeX is Petr Olsak 
(email: olsak@math.feld.cvut.cz). He reserves the right to find his
successor. In exceptional cases, for instance if the current
administrator cannot do his work on CSTeX any more, the CSTUG (Czech
and Slovak users group, http://www.cstug.cz) has a right to find next
administrator.

This document can be changed in future, if some new authors and
packages for CSTeX occurs. Only the current administrator can do some
changes of this document. The license notices of each package have to be
compatible with the wish of its authors.

The "CTAN:" means "Comprehensive TeX Archive Network" and it is 
one of the following public ftp sites:

ftp://ctan.tug.org/tex-archive
ftp://ftp.tex.ac.uk/tex-archive
ftp://ftp.dante.de/tex-archive
ftp://ftp.cstug.cz/pub/tex/CTAN 

The "CSTEX:" means "CSTeX ftp site" and it is 
one of the following public ftp sites:

ftp://math.feld.cvut.cz/pub/cstex        (primary server)
ftp://ftp.cstug.cz/pub/tex/local/cstex   (mirror)


--------------------------------------------------------------------

I. The "required" modules
=========================

1. TeX, METAFONT, Computer Modern, plain.
   author: Donald Knuth
   license: The program for "TeX/METAFONT/Computer Modern" is in
            the public domain and users may freely incorporate the
            algorithms from public source codes in their own programs.
	    However, use of the name "TeX/METAFONT/Computer Modern"
            is restricted to software systems that agree exactly with
            the programs maintained by author. For more details see
            CTAN:/systems/knuth/tex/tex.web and volumes B, D and E
            of Computers & Typesetting.
   notice:  use TRIP/TRAP test for validating your implementation of
            TeX/METAFONT programs.
   source:  CTAN:/systems/knuth

2. The implementation package of "TeX/METAFONT/drivers/supports" into an
   operating system. The CSTeX can be combined with any implementation package
   (commercial or free). See the paragraph III for more details.
   notice:  Some dvi to PostScript convertor is needed. The Rokicki's dvips
            is recommended. It is free software.

3. CSfonts (Czech and Slovak fonts derived from Computer Modern)
   authors: Petr Novak, Karel Horak, Lada Lhotka, Petr Olsak
   emails: <Petr.Novak@internet.cz>, <horakk@math.cas.cz> 
           <lhotka@jcu.cz>, <olsak@math.feld.cvut.cz>
   license: GPL
   source:  CSTEX:/web2c/csfonts.tar.gz

4a czhyphen.tex (Czech hyphenation patterns for TeX)
   author: Pavel Sevecek
   email:  <pavel@lingea.cz>
   license: GPL
   included in: CSTEX:/web2c/csplain.tar.gz

4b skhyphen.tex (Slovak hyphenation patterns for TeX)
   author: Hanka Chlebikova
   email:  <chlebikj@dcs.fmph.uniba.sk>
   license: GPL
   included in: CSTEX:/web2c/csplain.tar.gz   

5. czech.sty, slovak.sty (The standard styles for Czech/Slovak languages)
   authors: Oldrich Ulrych, Karel Horak, Petr Olsak, Jaroslav Snajdr
   emails:  <ulrych@karlin.mff.cuni.cz>, <horakk@math.cas.cz>,
            <olsak@math.feld.cvut.cz>, <snajdr5@students.zcu.cz>
   license: GPL
   included in: CSTEX:/web2c/csplain.tar.gz 

6. csplain (the TeX format derived from plain)
   author: Petr Olsak
   email:  <olsak@math.feld.cvut.cz>
   license: GPL with appendix
   appendix: You can do any changes in this software for your own
             usage. However, you cannot distribute the changed
             software under the same name "csplain".  Only the current
             administrator of CSTeX can do official changes to
             csplain.
   notice:   see the cstrip.tex for validating of csplain format in 
             your TeX implementation.
   source:   CSTEX:/web2c/csplain.tar.gz

7. LaTeX (the macro package for TeX)
   authors: Leslie Lamport, LaTeX 2e team
   license: see the COPYRIGHT notice in src/latex.ltx, for example.
   source:  CTAN:/macros/latex

8. csLaTeX (the extension of LaTeX for Czech and Slovak languages)
   authors: Jiri Zlatuska, Zdenek Wagner, Jaroslav Snajdr
   emails:  <zlatuska@muni.cz>, <wagner@beba.cesnet.cz>,
            <snajdr5@students.zcu.cz>
   license: GPL
   source:  http://home.zcu.cz/~snajdr5/cslatex/

9. cspsfonts (The usage of the standard PS fonts in Czech/Slovak languages)
   authors: Petr Olsak, Zdenek Wagner
   emails:  <olsak@math.feld.cvut.cz>, <wagner@beba.cesnet.cz>
   license: GPL
   source:  CSTEX:/web2c/cspsfonts.tar.gz
 
You can find the complete text of GPL in the file lic-gpl.eng.


II. The "optional" packages
===========================

-- The implementation of CSfont in Type1 format derived from BaKoMa fonts
   author: Petr Olsak
   email: <olsak@math.feld.cvut.cz>
   author of BaKoMa fonts: Basil K. Malyshev <malyshev@mx.ihep.su>
   license: The same, as BaKoMa license: The author of BaKoMa fonts
            grants to any individual or non-commercial organization
            the right to use and to make an unlimited number of copies
            of full package or selected fonts when this is done
            WITHOUT CHARGE and has attached the file BaKoMa-CM.Fonts
            with licence agreement. This fonts cannot be sold or
            distributed with any commercial product or used in any
            commercial organization without additional agreement with
            author of BaKoMa fonts.  If you want to charge a small fee
            via distribution these fonts or any derivations from this
            fonts, you should contact the author of BaKoMa fonts.  
            See BaKoMa-CM.Fonts file in cspdftexlib.tag.gz.
   source: CSTEX:/web2c/cspdftexlib.tar.gz 

-- The program MNU (for menu configuration for DOS)
   author: Petr Olsak
   email: <olsak@math.feld.cvut.cz>
   license: Free, but without source codes and without any warranty.
   source: CSTEX:/emtex/mnu.zip
               
-- The program a2ac (adds composites and kerns in afm files)
   author: Petr Olsak
   email: <olsak@math.feld.cvut.cz>
   license: GPL
   source:  ftp://math.feld.cvut.cz/pub/olsak/a2ac

-- enctex (a simple patch of TeX for re-encoding ability)
   author: Petr Olsak
   license: GPL
   comment: The resulting program cannot be called TeX after enctex patch
            is applied. See the Knuth's license for TeX.
            The name "a program derived from TeX using enctex"
            is recommended.
   source:  ftp://math.feld.cvut.cz/pub/olsak/enctex
            CSTEX:/web2c/enctex.tar.gz

-- csindex (a simple extension of makeindex program)
   author of makeindex: Pehong Chen <phc@renoir.berkeley.edu>
   authors of csindex: Zdenek Wagner (for DOS, OS2), Zdenek Salvet (for Linux)
   emails:  <wagner@beba.cesnet.cz>, <salvet@ics.muni.cz> 
   license: see the COPYING file in csindex-*.tar.gz
   source:  CSTEX:/web2c/csindex-*.tar.gz

-- csbibtex (a simple extension of bibtex program for DOS)
   author of bibtex: Oren Patashnik <patashnik@score.stanford.edu>
   author of csbibtex: Petr Novotny <novotny@earn.cvut.cz>
   license: Copying of this file is authorized only if either
        (1) you make absolutely no changes to your copy, including name, or
        (2) if you do make changes, you name it something other than
        btxbst.doc, plain.bst, unsrt.bst, alpha.bst, and abbrv.bst.
   source: CSTEX:/emtex/bibtex.zip

-- csuvodlat (a Czech translation "LaTeX strucny popis" of a german original)
   authors o original: Hubert Partl, Elisabeth Schlegl, Irene Hyna
   author of translation: Pavel Sykora <sykora@fsid.cvut.cz>
   license: You may copy and distribute this text in unchanged
            electronic form, you can print this text but you cannot
            distribute the hardcopy form of this text.
   source: CSTEX:/web2c/csuvodlat.tar.gz         

-- CSED (the text editor for DOS)
   author: Pavel Sevecek
   email: <pavel@lingea.cz>   
   license: NON FREE. However, the members of CSTUG can use this
            software without any charges. See smlcsed.tex for
            more details.
   source:  NONE in publics sites. Please, contact the CSTUG.

-- texspell (The spell checker, cz, sk, eng. dictionaries + program for DOS)
   authors: Janus Drozd, Jan Hajic, Jan Hric 1991-92 
   license: NON FREE. Only CSTUG has the right to distribute this
            program only for its members. Copying of texspell, its
            dictionaries and its documentation by another subject, for
            another subject or using this program by another subject is
            interpreted as a breaking of author's copyright. Authors
            nor CSTUG give no warranty for this program. See the file
            emtex\doc\programs\smlouva.cs for more details.
   source:  NONE in public sites. Please, contact the CSTUG.

-- qedit (the text editor for DOS)
   licensed by: SemWare, 4343 Shallowford Rd, Suite C3A, Marietta, USA
   version: v2.15 August 1991, Shareware version.
   license: NON FREE. If you continue using qedit beyond a 30-day trial
            period, you MUST PURCHASE a license for it. Along with
            licensed copy of the software, you will receive a printed,
            bound manual, and you will be entitled to free technical
            support and low-cost updates.
   notice:  This shareware version of qedit is distributed as one option
            of the text editor for DOS implementation of TeX with CSTeX.
            It is not alone option, of course.
   source:  CSTEX:/emtex/qedit.zip

-- te (the simple text editor for DOS)
   author:  Peter Sawatzki, Buchenhof 3, D-5800 Haagen 1, Germany
   version: 28. Nov. 1989
   license: free, but without source codes and without warranty.
   source:  CSTEX:/emtex/te.zip

-- vlnka (replaces spaces by tie in places where no-break is recommended)
   author:  Oldrich Ulrych, Stepan Kasal
   license: Program is in public domain including Pascal source codes.
   source:  CSTEX:/emtex/tie.zip

-- vlna (replaces spaces by tie in places where no-break is recommended)
   author:  Petr Olsak
   email:   olsak@math.feld.cvut.cz
   license: Program is free including WEB source codes.
   source:  ftp://math.feld.cvut.cz/pub/olsak/vlna

-- cstocs2 (converts the czech/slovak text between different encodings)
   author:  Josef Tkadlec
   email:   tkadlec@math.feld.cvut.cz
   license: Program is free including Pascal source codes, without warranty.
   source:  CSTEX:/emtex/cstocs2.zip

-- dvicopy (the dvi to dvi procesor includes the virtual fonts)
   author:  Peter Breitenlohner
   email:   <peb@dmumpiwh.mppmu.mpg.de>
   license: GPL
   source:  CSTEX:/emtex/dvicopy.zip
   notice:  The DOS binary is used here for usage in emTeX implementation.
   source codes in: CSTEX:/web2c/texk*.tar.gz

-- dviout (the dvi to dvi processor handles with names of fonts)
   author:  Oldrich Ulrych
   email:   <ulrych@karlin.mff.cuni.cz>
   license: Free including Pascal source codes.
   source:  CSTEX:/emtex/dviout.zip

-- pmCSTeX (user interface for emTeX + CSTeX + EPM editor for OS2)
   author:  Petr Mikulik
   email:   mikulik@sci.muni.cz
   license: Free software
   source:  CSTEX:/emtex/os2.zip

-- dviwin (dvi viewer for MS Windows)
   author:  Hippocrates Sendoukas
   email:   <isendo@leon.nrcps@ariadne-t.gr>
   license: The author of this software grants to any individual or
            non-commercial organization the right to use and to make an
            unlimited number of copies of this software. Commercial
            entities may use the software for an evaluation period of
            two weeks. Any further use requires a license from the
            author. See emtex\doc\win\dviwin.wri for more details.
   source in: CSTEX:/emtex/texwin.zip

-- TeXtelmExtel (the user interface for TeX in MS Windows)
   author:  Andreas Krebs
   email:   <krebs@edvz.sbg.ac.at>
   license: Free software. See emtex\doc\win\texmex.wri, section 1.4
            for more details and author's answers the question
            "Why Freeware".
   source in: CSTEX:/emtex/texwin.zip

-- MS Windows support of emTeX + CSTeX packed in zip archive
   author: Josef Krob
   email:  jokr@phil.muni.cz
   license: see the dviwin and TeXtelmExtel licenses. These programs are
            used in this archive.
   source:  CSTEX:/emtex/texwin.zip


III The implementation packages of TeX available on CSTeX ftp site
==================================================================

1. web2c (for C compiler including sources, binaries for many platforms)
   authors: Karl Berry, Olaf Weber 
   emails:  <kb@cs.umb.edu>, <Olaf.Weber@cwi.nl> 
   license: GPL, see COPYING* files in texk-*/ source tree.     
   source:  CTAN:/systems/web2c
   files:   texk-*.tar.gz, texmflib-*.tar.gz, etexlib-2.0.tar.gz,
            omegalib-1.5.tar.gz, pdftexlib-0.12f.tar.gz.
   note:    this package includes more sub-packages from different
            authors (eTeX, pdfTeX, LaTex, omega, ...) See the
            appropriate license files in these sub-packages.

1a cstex/web2c (ready to install CSTeX with web2c from TeX sources)
   author: Petr Olsak 
   email:  <olsak@math.feld.cvut.cz>
   license: See above for licenses of individual modules.
   source:  CSTEX:/web2c
   note:    All archive files of "OS independent" modules of CSTeX
            are *primary* distributed in this directory in tar.gz
            format. They are the following archive files: csfonts,
            csplain, cslatex-*, cspsfonts, cspdftexlib, enctex,
            csindex-*, csuvodlat.

2. emTeX for DOS or OS/2 or (but somewhat bad choice) for MS Win.
   author: Eberhard Mattes
   email:  <mattes@azu.informatik.uni-stuttgart.de>
   license: Software written by Eberhard Mattes which is part of the
            emTeX distribution may be used without restrictions.
            This software  may only be distributed in UNCHANGED
            and COMPLETE form, including all the files listed in
            README.ENG's `Distribution files' section, and only if
            this is done WITHOUT CHARGE (you are allowed to omit some
            or all of the *.fli files). See emtex\doc\english\readme.eng
            section 6 for more details.
   source:  CTAN:/systems/os2/emtex
   files:   see emtex\doc\english\readme.eng section 4.

2a cstex/emtex (ready to install CSTeX with emTeX + user interface for DOS)
   author: Petr Olsak 
   email:  <olsak@math.feld.cvut.cz>
   license: See above for licenses of individual modules.
            The install program and the user interface for DOS is based
            on program MNU (see above) and DOS batches. They are free
            software.
   source:  CSTEX:/emtex
   note:    see the @ctimne.txt file for more details.

3. teTeX for UNIX (derived from web2c)
   author: Thomas Esser
   email: <te@informatik.uni-hannover.de>
   license: GPL
   source:  CTAN:/systems/unix/teTeX

3a cstex/tetex-rpm (ready to install CSTeX with teTeX from *rpm packages)
   author: Michal Choura
   email:  <Michal.Choura@bigfoot.com>
   license: See above for licenses of individual modules.
   source:  CSTEX:/tetex-rpm