diff --git a/doc/LICENSE b/doc/LICENSE
deleted file mode 100644
index cc3ccfad3..000000000
--- a/doc/LICENSE
+++ /dev/null
@@ -1,128 +0,0 @@
-
- The "Artistic License"
-
- Preamble
-
-The intent of this document is to state the conditions under which a
-Package may be copied, such that the Copyright Holder maintains some
-semblance of artistic control over the development of the package,
-while giving the users of the package the right to use and distribute
-the Package in a more-or-less customary fashion, plus the right to make
-reasonable modifications.
-
-Definitions:
-
- "Package" refers to the collection of files distributed by the
- Copyright Holder, and derivatives of that collection of files
- created through textual modification.
-
- "Standard Version" refers to such a Package if it has not been
- modified, or has been modified in accordance with the wishes
- of the Copyright Holder as specified below.
-
- "Copyright Holder" is whoever is named in the copyright or
- copyrights for the package.
-
- "You" is you, if you're thinking about copying or distributing
- this Package.
-
- "Reasonable copying fee" is whatever you can justify on the
- basis of media cost, duplication charges, time of people involved,
- and so on. (You will not be required to justify it to the
- Copyright Holder, but only to the computing community at large
- as a market that must bear the fee.)
-
- "Freely Available" means that no fee is charged for the item
- itself, though there may be fees involved in handling the item.
- It also means that recipients of the item may redistribute it
- under the same conditions they received it.
-
-1. You may make and give away verbatim copies of the source form of the
-Standard Version of this Package without restriction, provided that you
-duplicate all of the original copyright notices and associated disclaimers.
-
-2. You may apply bug fixes, portability fixes and other modifications
-derived from the Public Domain or from the Copyright Holder. A Package
-modified in such a way shall still be considered the Standard Version.
-
-3. You may otherwise modify your copy of this Package in any way, provided
-that you insert a prominent notice in each changed file stating how and
-when you changed that file, and provided that you do at least ONE of the
-following:
-
- a) place your modifications in the Public Domain or otherwise make them
- Freely Available, such as by posting said modifications to Usenet or
- an equivalent medium, or placing the modifications on a major archive
- site such as uunet.uu.net, or by allowing the Copyright Holder to include
- your modifications in the Standard Version of the Package.
-
- b) use the modified Package only within your corporation or organization.
-
- c) rename any non-standard executables so the names do not conflict
- with standard executables, which must also be provided, and provide
- a separate manual page for each non-standard executable that clearly
- documents how it differs from the Standard Version.
-
- d) make other distribution arrangements with the Copyright Holder.
-
-4. You may distribute the programs of this Package in object code or
-executable form, provided that you do at least ONE of the following:
-
- a) distribute a Standard Version of the executables and library files,
- together with instructions (in the manual page or equivalent) on where
- to get the Standard Version.
-
- b) accompany the distribution with the machine-readable source of
- the Package with your modifications.
-
- c) give non-standard executables non-standard names, and clearly
- document the differences in manual pages (or equivalent), together
- with instructions on where to get the Standard Version.
-
- d) make other distribution arrangements with the Copyright Holder.
-
-5. You may charge a reasonable copying fee for any distribution of this
-Package. You may charge any fee you choose for support of this
-Package. You may not charge a fee for this Package itself. However,
-you may distribute this Package in aggregate with other (possibly
-commercial) programs as part of a larger (possibly commercial) software
-distribution provided that you do not advertise this Package as a
-product of your own. You may embed this Package's interpreter within
-an executable of yours (by linking); this shall be construed as a mere
-form of aggregation, provided that the complete Standard Version of the
-interpreter is so embedded.
-
-6. The scripts and library files supplied as input to or produced as
-output from the programs of this Package do not automatically fall
-under the copyright of this Package, but belong to whomever generated
-them, and may be sold commercially, and may be aggregated with this
-Package. If such scripts or library files are aggregated with this
-Package via the so-called "undump" or "unexec" methods of producing a
-binary executable image, then distribution of such an image shall
-neither be construed as a distribution of this Package nor shall it
-fall under the restrictions of Paragraphs 3 and 4, provided that you do
-not represent such an executable image as a Standard Version of this
-Package.
-
-7. C subroutines (or comparably compiled subroutines in other
-languages) supplied by you and linked into this Package in order to
-emulate subroutines and variables of the language defined by this
-Package shall not be considered part of this Package, but are the
-equivalent of input as in Paragraph 6, provided these subroutines do
-not change the language in any way that would cause it to fail the
-regression tests for the language.
-
-8. Aggregation of this Package with a commercial distribution is always
-permitted provided that the use of this Package is embedded; that is,
-when no overt attempt is made to make this Package's interfaces visible
-to the end user of the commercial distribution. Such use shall not be
-construed as a distribution of this Package.
-
-9. The name of the Copyright Holder may not be used to endorse or promote
-products derived from this software without specific prior written permission.
-
-10. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
-IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
-WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-
- The End
diff --git a/doc/OPL b/doc/OPL
deleted file mode 100644
index 5677db6c5..000000000
--- a/doc/OPL
+++ /dev/null
@@ -1,84 +0,0 @@
-OpenContent License (OPL) Version 1.0, July 14. 1998
-
-This document outlines the principles underlying the OpenContent (OC)
-movement and may be redistributed provided it remains unaltered. For
-legal purposes, this document is the license under which OpenContent is
-made available for use.
-
-The original version of this document may be found at
-http://www.opencontent.org/opl.html
-
-LICENSE
-
-Terms and Conditions for Copying, Distributing, and Modifying
-
-Items other than copying, distributing, and modifying the Content with
-which this license was distributed (such as using, etc.) are outside
-the scope of this license.
-
-1. You may copy and distribute exact replicas of the OpenContent (OC)
-as you receive it, in any medium, provided that you conspicuously and
-appropriately publish on each copy an appropriate copyright notice and
-disclaimer of warranty; keep intact all the notices that refer to this
-License and to the absence of any warranty; and give any other recipients
-of the OC a copy of this License along with the OC. You may at your
-option charge a fee for the media and/or handling involved in creating
-a unique copy of the OC for use offline, you may at your option offer
-instructional support for the OC in exchange for a fee, or you may at
-your option offer warranty in exchange for a fee. You may not charge a
-fee for the OC itself. You may not charge a fee for the sole service
-of providing access to and/or use of the OC via a network (e.g. the
-Internet), whether it be via the world wide web, FTP, or any other method.
-
-2. You may modify your copy or copies of the OpenContent or any portion
-of it, thus forming works based on the Content, and distribute such
-modifications or work under the terms of Section 1 above, provided that
-you also meet all of these conditions:
-
-a) You must cause the modified content to carry prominent notices stating
-that you changed it, the exact nature and content of the changes, and
-the date of any change.
-
-b) You must cause any work that you distribute or publish, that in whole
-or in part contains or is derived from the OC or any part thereof, to
-be licensed as a whole at no charge to all third parties under the terms
-of this License, unless otherwise permitted under applicable Fair Use law.
-
-These requirements apply to the modified work as a whole. If
-identifiable sections of that work are not derived from the OC, and can
-be reasonably considered independent and separate works in themselves,
-then this License, and its terms, do not apply to those sections when
-you distribute them as separate works. But when you distribute the
-same sections as part of a whole which is a work based on the OC,
-the distribution of the whole must be on the terms of this License,
-whose permissions for other licensees extend to the entire whole, and
-thus to each and every part regardless of who wrote it. Exceptions are
-made to this requirement to release modified works free of charge under
-this license only in compliance with Fair Use law where applicable.
-
-3. You are not required to accept this License, since you have not signed
-it. However, nothing else grants you permission to copy, distribute or
-modify the OC. These actions are prohibited by law if you do not accept
-this License. Therefore, by distributing or translating the OC, or by
-deriving works herefrom, you indicate your acceptance of this License
-to do so, and all its terms and conditions for copying, distributing or
-translating the OC.
-
-NO WARRANTY
-
-4. BECAUSE THE OPENCONTENT (OC) IS LICENSED FREE OF CHARGE, THERE IS NO
-WARRANTY FOR THE OC, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT
-WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER
-PARTIES PROVIDE THE OC "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
-EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
-ENTIRE RISK OF USE OF THE OC IS WITH YOU. SHOULD THE OC PROVE FAULTY,
-INACCURATE, OR OTHERWISE UNACCEPTABLE YOU ASSUME THE COST OF ALL NECESSARY
-REPAIR OR CORRECTION.
-
-5. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MIRROR AND/OR
-REDISTRIBUTE THE OC AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
-ARISING OUT OF THE USE OR INABILITY TO USE THE OC, EVEN IF SUCH HOLDER
-OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
diff --git a/doc/SIOD.txt b/doc/SIOD.txt
new file mode 100644
index 000000000..3556ef015
--- /dev/null
+++ b/doc/SIOD.txt
@@ -0,0 +1,27 @@
+The FreeCraft Project includes the sources of SIOD.
+
+SIOD is a small-footprint implementation of the Scheme programming language
+that is provided with some database, unix programming and cgi scripting
+extensions.
+
+It was written by George J. Carrette.
+
+ * COPYRIGHT (c) 1988-1997 BY *
+ * PARADIGM ASSOCIATES INCORPORATED, CAMBRIDGE, MASSACHUSETTS. *
+ * ALL RIGHTS RESERVED *
+
+ Permission to use, copy, modify, distribute and sell this software
+ and its documentation for any purpose and without fee is hereby
+ granted, provided that the above copyright notice appear in all copies
+ and that both that copyright notice and this permission notice appear
+ in supporting documentation, and that the name of Paradigm Associates
+ Inc not be used in advertising or publicity pertaining to distribution
+ of the software without specific, written prior permission.
+
+ PARADIGM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+ PARADIGM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ SOFTWARE.
diff --git a/doc/artistic-license.html b/doc/artistic-license.html
deleted file mode 100644
index 9d05c98b2..000000000
--- a/doc/artistic-license.html
+++ /dev/null
@@ -1,124 +0,0 @@
-<!doctype HTML public "-//W3O//DTD W3 HTML 3.2//EN">
-<HTML>
-<HEAD>
-<TITLE>The Artistic License</TITLE>
-</HEAD>
-<BODY TEXT="#000000" BGCOLOR="#FFFFFF">
-
-<H1 ALIGN=CENTER><FONT COLOR=#ff0000>Artistic License</FONT></H1>
-
-<CENTER>The "Artistic License"<P>
-Preamble<P></CENTER>
-
-The intent of this document is to state the conditions under which a
-Package may be copied, such that the Copyright Holder maintains some
-semblance of artistic control over the development of the package,
-while giving the users of the package the right to use and distribute
-the Package in a more-or-less customary fashion, plus the right to make
-reasonable modifications.<p>
-
-Definitions:<P>
-
-<UL>
-<LI> "Package" refers to the collection of files distributed by the
- Copyright Holder, and derivatives of that collection of files
- created through textual modification.<P>
-
-<LI> "Standard Version" refers to such a Package if it has not been
- modified, or has been modified in accordance with the wishes
- of the Copyright Holder.<P>
-
-<LI> "Copyright Holder" is whoever is named in the copyright or
- copyrights for the package.<P>
-
-<LI> "You" is you, if you're thinking about copying or distributing
- this Package.<P>
-
-<LI> "Reasonable copying fee" is whatever you can justify on the
- basis of media cost, duplication charges, time of people involved,
- and so on. (You will not be required to justify it to the
- Copyright Holder, but only to the computing community at large
- as a market that must bear the fee.)<P>
-
-<LI> "Freely Available" means that no fee is charged for the item
- itself, though there may be fees involved in handling the item.
- It also means that recipients of the item may redistribute it
- under the same conditions they received it.<P>
-</UL>
-
-1. You may make and give away verbatim copies of the source form of the
-Standard Version of this Package without restriction, provided that you
-duplicate all of the original copyright notices and associated disclaimers.<P>
-
-2. You may apply bug fixes, portability fixes and other modifications
-derived from the Public Domain or from the Copyright Holder. A Package
-modified in such a way shall still be considered the Standard Version.<P>
-
-3. You may otherwise modify your copy of this Package in any way, provided
-that you insert a prominent notice in each changed file stating how and
-when you changed that file, and provided that you do at least ONE of the
-following:<P>
-
-<BLOCKQUOTE>
- a) place your modifications in the Public Domain or otherwise make them
- Freely Available, such as by posting said modifications to Usenet or
- an equivalent medium, or placing the modifications on a major archive
- site such as ftp.uu.net, or by allowing the Copyright Holder to include
- your modifications in the Standard Version of the Package.<P>
-
- b) use the modified Package only within your corporation or organization.<P>
-
- c) rename any non-standard executables so the names do not conflict
- with standard executables, which must also be provided, and provide
- a separate manual page for each non-standard executable that clearly
- documents how it differs from the Standard Version.<P>
-
- d) make other distribution arrangements with the Copyright Holder.<P>
-</BLOCKQUOTE>
-
-4. You may distribute the programs of this Package in object code or
-executable form, provided that you do at least ONE of the following:<P>
-
-<BLOCKQUOTE>
- a) distribute a Standard Version of the executables and library files,
- together with instructions (in the manual page or equivalent) on where
- to get the Standard Version.<P>
-
- b) accompany the distribution with the machine-readable source of
- the Package with your modifications.<P>
-
- c) accompany any non-standard executables with their corresponding
- Standard Version executables, giving the non-standard executables
- non-standard names, and clearly documenting the differences in manual
- pages (or equivalent), together with instructions on where to get
- the Standard Version.<P>
-
- d) make other distribution arrangements with the Copyright Holder.<P>
-</BLOCKQUOTE>
-
-5. You may charge a reasonable copying fee for any distribution of this
-Package. You may charge any fee you choose for support of this Package.
-You may not charge a fee for this Package itself. However,
-you may distribute this Package in aggregate with other (possibly
-commercial) programs as part of a larger (possibly commercial) software
-distribution provided that you do not advertise this Package as a
-product of your own.<P>
-
-6. The scripts and library files supplied as input to or produced as
-output from the programs of this Package do not automatically fall
-under the copyright of this Package, but belong to whomever generated
-them, and may be sold commercially, and may be aggregated with this
-Package.<P>
-
-7. C or perl subroutines supplied by you and linked into this Package
-shall not be considered part of this Package.<P>
-
-8. The name of the Copyright Holder may not be used to endorse or promote
-products derived from this software without specific prior written permission.<P>
-
-9. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
-IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
-WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.<P>
-
-<CENTER>The End</CENTER>
-</BODY></HTML>
diff --git a/doc/datadir.html b/doc/datadir.html
index 2ac8a6df1..d3a40ee11 100644
--- a/doc/datadir.html
+++ b/doc/datadir.html
@@ -1,6 +1,18 @@
<HTML><HEAD>
<!--
---- $Id$
+
+---- (c) Copyright 2001 by Lutz Sammer
+
+---- FreeCraft is free software; you can redistribute it and/or modify
+---- it under the terms of the GNU General Public License as published by
+---- the Free Software Foundation; either version 2 of the License, or
+---- (at your option) any later version.
+
+---- FreeCraft is distributed in the hope that it will be useful,
+---- but WITHOUT ANY WARRANTY; without even the implied warranty of
+---- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+---- GNU General Public License for more details.
-->
<TITLE>FreeCraft Version 1.17 - Data directory structure</TITLE>
</HEAD>
@@ -18,7 +30,7 @@
FreeCraft - A free fantasy real time strategy game engine
</PRE>
<B>(C) Copyright 2001 by The FreeCraft Project. Distributed under the
-<A HREF="artistic-license.html">"Artistic License"</A></B>
+<A HREF="gpl.html">"GNU General Public License"</A></B>
<HR>
<PRE>
Proposal for the new FreeCraft data directory structure:
diff --git a/doc/gpl.html b/doc/gpl.html
new file mode 100644
index 000000000..84fd86846
--- /dev/null
+++ b/doc/gpl.html
@@ -0,0 +1,552 @@
+<!DOCTYPE html PUBLIC "-//IETF//DTD HTML 2.0//EN">
+<HTML>
+<HEAD>
+<TITLE>GNU General Public License - GNU Project - Free Software Foundation (FSF)</TITLE>
+<LINK REV="made" HREF="mailto:webmasters@www.gnu.org">
+</HEAD>
+<BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#1F00FF" ALINK="#FF0000" VLINK="#9900DD">
+<H1>GNU General Public License</H1>
+<A HREF="/graphics/philosophicalgnu.html"><IMG SRC="/graphics/philosophical-gnu-sm.jpg"
+ ALT=" [image of a Philosophical GNU] "
+ WIDTH="160" HEIGHT="200"></A>
+
+<!-- Please keep this list alphabetical -->
+<!-- tower, gpl.ja.html is Japanese translation of THIS PAGE, -->
+<!-- NOT translation of GPL itself(gpl.ja.html contains the original -->
+<!-- English version). So please do not remove the following. -->
+<!-- Thanks -mhatta -->
+[
+ <A HREF="/copyleft/gpl.html">English</A>
+| <A HREF="/copyleft/gpl.ja.html">Japanese</A>
+]
+
+<!-- It is best to not enumerate the translations here in a menu bar, -->
+<!-- It is best to have the users follow this link, so they have the FSF' -->
+<!-- explanation about translations being unofficial, etc. -->
+
+<P>
+<UL>
+ <LI><A HREF="/copyleft/gpl-violation.html"><EM>What to do if you see a
+ possible GPL violation</EM></A>
+ <LI><A HREF="/copyleft/copyleft.html#translations"><EM>Translations
+ of the GPL</EM></A>
+ <LI>The GNU General Public License (GPL)
+ <A HREF="/copyleft/gpl.txt">in plain text format</A>
+ <LI>The GNU General Public License (GPL)
+ <A HREF="/copyleft/gpl.texi">in Texinfo format</A>
+</UL>
+<P>
+<HR>
+
+<P>
+
+<H2>Table of Contents</H2>
+<UL>
+
+ <LI><A NAME="TOC1" HREF="gpl.html#SEC1">GNU GENERAL PUBLIC LICENSE</A>
+<UL>
+<LI><A NAME="TOC2" HREF="gpl.html#SEC2">Preamble</A>
+<LI><A NAME="TOC3" HREF="gpl.html#SEC3">TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</A>
+<LI><A NAME="TOC4" HREF="gpl.html#SEC4">How to Apply These Terms to Your New Programs</A>
+
+</UL>
+</UL>
+
+<P>
+
+<HR>
+
+<P>
+
+
+
+<H2><A NAME="SEC1" HREF="gpl.html#TOC1">GNU GENERAL PUBLIC LICENSE</A></H2>
+<P>
+Version 2, June 1991
+
+</P>
+
+<PRE>
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+</PRE>
+
+
+
+<H2><A NAME="SEC2" HREF="gpl.html#TOC2">Preamble</A></H2>
+
+<P>
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.) You can apply it to
+your programs, too.
+
+</P>
+<P>
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+</P>
+<P>
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+</P>
+<P>
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+</P>
+<P>
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+</P>
+<P>
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+</P>
+<P>
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+</P>
+<P>
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+</P>
+
+
+<H2><A NAME="SEC3" HREF="gpl.html#TOC3">TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</A></H2>
+
+
+<P>
+
+<STRONG>0.</STRONG>
+ This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+<P>
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+<P>
+
+<STRONG>1.</STRONG>
+ You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+<P>
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+<P>
+
+<STRONG>2.</STRONG>
+ You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+<P>
+
+<UL>
+
+<LI><STRONG>a)</STRONG>
+ You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+<P>
+<LI><STRONG>b)</STRONG>
+ You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+<P>
+<LI><STRONG>c)</STRONG>
+ If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+</UL>
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+<P>
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+<P>
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+<P>
+
+<STRONG>3.</STRONG>
+ You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+
+<!-- we use this doubled UL to get the sub-sections indented, -->
+<!-- while making the bullets as unobvious as possible. -->
+<UL>
+
+<LI><STRONG>a)</STRONG>
+ Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+<P>
+<LI><STRONG>b)</STRONG>
+ Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+<P>
+<LI><STRONG>c)</STRONG>
+ Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+</UL>
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable. However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+<P>
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+<P>
+
+<STRONG>4.</STRONG>
+ You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+<P>
+
+<STRONG>5.</STRONG>
+ You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+<P>
+
+<STRONG>6.</STRONG>
+ Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+<P>
+
+<STRONG>7.</STRONG>
+ If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+<P>
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+<P>
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+<P>
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+<P>
+
+<STRONG>8.</STRONG>
+ If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+<P>
+
+<STRONG>9.</STRONG>
+ The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+<P>
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+<P>
+
+
+<STRONG>10.</STRONG>
+ If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+
+
+<P><STRONG>NO WARRANTY</STRONG></P>
+
+<P>
+
+<STRONG>11.</STRONG>
+ BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+<P>
+
+<STRONG>12.</STRONG>
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+<P>
+
+
+<H2>END OF TERMS AND CONDITIONS</H2>
+
+
+
+<H2><A NAME="SEC4" HREF="gpl.html#TOC4">How to Apply These Terms to Your New Programs</A></H2>
+
+<P>
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+</P>
+<P>
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+</P>
+
+<PRE>
+<VAR>one line to give the program's name and an idea of what it does.</VAR>
+Copyright (C) <VAR>yyyy</VAR> <VAR>name of author</VAR>
+
+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 the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+</PRE>
+
+<P>
+Also add information on how to contact you by electronic and paper mail.
+
+</P>
+<P>
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+</P>
+
+<PRE>
+Gnomovision version 69, Copyright (C) <VAR>year</VAR> <VAR>name of author</VAR>
+Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
+type `show w'. This is free software, and you are welcome
+to redistribute it under certain conditions; type `show c'
+for details.
+</PRE>
+
+<P>
+The hypothetical commands <SAMP>`show w'</SAMP> and <SAMP>`show c'</SAMP> should show
+the appropriate parts of the General Public License. Of course, the
+commands you use may be called something other than <SAMP>`show w'</SAMP> and
+<SAMP>`show c'</SAMP>; they could even be mouse-clicks or menu items--whatever
+suits your program.
+
+</P>
+<P>
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+</P>
+
+<PRE>
+Yoyodyne, Inc., hereby disclaims all copyright
+interest in the program `Gnomovision'
+(which makes passes at compilers) written
+by James Hacker.
+
+<VAR>signature of Ty Coon</VAR>, 1 April 1989
+Ty Coon, President of Vice
+</PRE>
+
+<P>
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
+
+<HR>
+
+Return to <A HREF="/home.html">GNU's home page</A>.
+<P>
+FSF & GNU inquiries & questions to
+<A HREF="mailto:gnu@gnu.org"><EM>gnu@gnu.org</EM></A>.
+Other <A HREF="/home.html#ContactInfo">ways to contact</A> the FSF.
+<P>
+Comments on these web pages to
+<A HREF="mailto:webmasters@www.gnu.org"><EM>webmasters@www.gnu.org</EM></A>,
+send other questions to
+<A HREF="mailto:gnu@gnu.org"><EM>gnu@gnu.org</EM></A>.
+<P>
+Copyright notice above.<BR>
+Free Software Foundation, Inc.,
+59 Temple Place - Suite 330, Boston, MA 02111, USA
+<P>
+Updated:
+<!-- hhmts start -->
+31 Jul 2000 jonas
+<!-- hhmts end -->
+<HR>
+</BODY>
+</HTML>
diff --git a/doc/gpl.txt b/doc/gpl.txt
new file mode 100644
index 000000000..5b6e7c66c
--- /dev/null
+++ b/doc/gpl.txt
@@ -0,0 +1,340 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable. However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ 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
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/doc/opl.html b/doc/opl.html
deleted file mode 100644
index 5da8dfdbf..000000000
--- a/doc/opl.html
+++ /dev/null
@@ -1,98 +0,0 @@
-<html><head>
-<title>OpenContent License (OPL)</title>
-</head><body><center>
-
-<br><br>
-<font face="arial, helvetica" size="+1">
-<b>OpenContent License (OPL)</b><br>
-</font>
-<font face="arial, helvetica" size="-1">
-Version 1.0, July 14, 1998.
-<br><br>
-This document outlines the principles underlying the OpenContent
-(OC) movement and may be redistributed provided it remains
-unaltered. For legal purposes, this document is the license
-under which OpenContent is made available for use.
-<br><br>
-The original version of this document may be found at
-http://www.opencontent.org/opl.shtml
-<br><br>
-<b>LICENSE</b>
-<br><br>
-Terms and Conditions for Copying, Distributing, and Modifying
-<br><br>
-Items other than copying, distributing, and modifying the
-Content with which this license was distributed (such as using,
-etc.) are outside the scope of this license.
-<br><br>
-1. You may copy and distribute exact replicas of the OpenContent (OC)
-as you receive it, in any medium, provided that you conspicuously and
-appropriately publish on each copy an appropriate copyright notice and
-disclaimer of warranty; keep intact all the notices that refer to this
-License and to the absence of any warranty; and give any other
-recipients of the OC a copy of this License along with the OC. You may
-at your option charge a fee for the media and/or handling involved in
-creating a unique copy of the OC for use offline, you may at your option
-offer instructional support for the OC in exchange for a fee, or you may
-at your option offer warranty in exchange for a fee. You may not charge
-a fee for the OC itself. You may not charge a fee for the sole service of
-providing access to and/or use of the OC via a network (e.g. the
-Internet), whether it be via the world wide web, FTP, or any other
-method.
-<br><br>
-2. You may modify your copy or copies of the OpenContent or any portion
-of it, thus forming works based on the Content, and distribute
-such modifications or work under the terms of Section 1 above, provided
-that you also meet all of these conditions:
-<br><br>
- a) You must cause the modified content to carry prominent notices stating
- that you changed it, the exact nature and content of the changes,
- and the date of any change.
-<br><br>
- b) You must cause any work that you distribute or publish, that in whole
- or in part contains or is derived from the OC or any part thereof, to be
- licensed as a whole at no charge to all third parties under the terms of
- this License, unless otherwise permitted under applicable Fair Use law.
-<br><br>
-These requirements apply to the modified work as a whole. If
-identifiable sections of that work are not derived from the OC, and can
-be reasonably considered independent and separate works in themselves,
-then this License, and its terms, do not apply to those sections when
-you distribute them as separate works. But when you distribute the same
-sections as part of a whole which is a work based on the OC, the
-distribution of the whole must be on the terms of this License, whose
-permissions for other licensees extend to the entire whole, and thus to
-each and every part regardless of who wrote it. Exceptions are made to
-this requirement to release modified works free of charge under this
-license only in compliance with Fair Use law where applicable.
-<br><br>
-3. You are not required to accept this License, since you have not
-signed it. However, nothing else grants you permission to copy,
-distribute or modify the OC. These actions are prohibited by law if you
-do not accept this License. Therefore, by distributing or translating
-the OC, or by deriving works herefrom, you indicate your acceptance of
-this License to do so, and all its terms and conditions for copying,
-distributing or translating the OC.
-<br><br>
-<b>NO WARRANTY</b>
-<br><br>
-4. BECAUSE THE OPENCONTENT (OC) IS LICENSED FREE OF CHARGE, THERE IS
-NO WARRANTY FOR THE OC, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT
-WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER
-PARTIES PROVIDE THE OC "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
-EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-THE ENTIRE RISK OF USE OF THE OC IS WITH YOU.
-SHOULD THE OC PROVE FAULTY, INACCURATE, OR OTHERWISE UNACCEPTABLE
-YOU ASSUME THE COST OF ALL NECESSARY REPAIR OR CORRECTION.
-<br><br>
-5. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MIRROR AND/OR
-REDISTRIBUTE THE OC AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
-ARISING OUT OF THE USE OR INABILITY TO USE THE OC, EVEN IF SUCH HOLDER OR
-OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
-
-</center>
-</body>
-</html>