xref: /dports/biology/protomol/protomol/LICENSE

ProtoMol GNU GENERAL PUBLIC LICENSE

This Software is copyrighted by the University of Notre Dame and the University
of Bergen, Norway, whom grant you the right to use this software under
the terms of the GNU General Public License. Although you are under no
obligation, the ProtoMol devlopment team would appreciate the
inclusion of the following citation in all research and development
works which utilize this software:

T. Matthey, T. Cickovski, S. Hampton, A. Ko, Q. Ma, T. Slabach
and J. A. Izaguirre, 'ProtoMol, an Object-Oriented Framework for Prototyping
Novel Algorithms for Molecular Dynamics', ACM Transactions on Mathematical
Software, Vol 30(3), pp 237-265, 2004

               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 in-
tended to guarantee your freedom to share and change free software-to
make sure the software is free for all its users. This General Public Li-
cense 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 in-
dividually 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 modifi-
cation follow.

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", be-
      low, 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 no-
      tice 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 Pro-
  gram.
  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 dis-
  tribute 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 stat-
          ing 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 in-
          teractive 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 identifi-
  able sections of that work are not derived from the Program, and can
  be reasonably considered independent and separate works in them-
  selves, 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 Pro-
  gram 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 Sec-
       tions 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 custom-
       arily 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 ex-
  cept 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, par-
  ties 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 orig-
  inal 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 re-
  sponsible for enforcing compliance by third parties to this License.

7. If, as a consequence of a court judgment or allegation of patent in-
  fringement or for any other reason (not limited to patent issues), con-
  ditions 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 coun-
   tries, 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 ver-
   sions 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 condi-
   tions 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 pro-
   grams 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 some-
   times 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 ap-
     plicable 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 im-
     plied, 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.


                  GNU Free Documentation License

   Version 1.1, March 2000

Copyright c
             2000 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.

0. Preamble
The purpose of this License is to make a manual, textbook, or other written
document "free" in the sense of freedom: to assure everyone the effective
freedom to copy and redistribute it, with or without modifying it, either
commercially or noncommercially. Secondarily, this License preserves for
the author and publisher a way to get credit for their work, while not being
considered responsible for modifications made by others.
   This License is a kind of "copyleft", which means that derivative works
of the document must themselves be free in the same sense. It complements
the GNU General Public License, which is a copyleft license designed for
free software.
   We have designed this License in order to use it for manuals for free
software, because free software needs free documentation: a free program
should come with manuals providing the same freedoms that the software
does. But this License is not limited to software manuals; it can be used
for any textual work, regardless of subject matter or whether it is published
as a printed book. We recommend this License principally for works whose
purpose is instruction or reference.

1. Applicability and Definitions
This License applies to any manual or other work that contains a notice
placed by the copyright holder saying it can be distributed under the terms
of this License. The "Document", below, refers to any such manual or work.
Any member of the public is a licensee, and is addressed as "you".

* A "Modified Version" of the Document means any work containing
  the Document or a portion of it, either copied verbatim, or with mod-
  ifications and/or translated into another language.

* A "Secondary Section" is a named appendix or a front-matter sec-
  tion of the Document that deals exclusively with the relationship of
  the publishers or authors of the Document to the Document's overall
  subject (or to related matters) and contains nothing that could fall
  directly within that overall subject. (For example, if the Document
  is in part a textbook of mathematics, a Secondary Section may not
  explain any mathematics.) The relationship could be a matter of his-
  torical connection with the subject or with related matters, or of legal,
  commercial, philosophical, ethical or political position regarding them.

* The "Invariant Sections" are certain Secondary Sections whose titles
  are designated, as being those of Invariant Sections, in the notice that
  says that the Document is released under this License.

* The "Cover Texts" are certain short passages of text that are listed,
  as Front-Cover Texts or Back-Cover Texts, in the notice that says that
  the Document is released under this License.

* A "Transparent" copy of the Document means a machine-readable
  copy, represented in a format whose specification is available to the
  general public, whose contents can be viewed and edited directly and
  straightforwardly with generic text editors or (for images composed of
  pixels) generic paint programs or (for drawings) some widely available
  drawing editor, and that is suitable for input to text formatters or
  for automatic translation to a variety of formats suitable for input to
  text formatters. A copy made in an otherwise Transparent file format
  whose markup has been designed to thwart or discourage subsequent
  modification by readers is not Transparent. A copy that is not "Trans-
  parent" is called "Opaque".
  Examples of suitable formats for Transparent copies include plain
  ASCII without markup, Texinfo input format, LaTeX input format,
  SGML or XML using a publicly available DTD, and standard-conforming
  simple HTML designed for human modification. Opaque formats in-
  clude PostScript, PDF, proprietary formats that can be read and
  edited only by proprietary word processors, SGML or XML for which
  the DTD and/or processing tools are not generally available, and the
  machine-generated HTML produced by some word processors for out-
  put purposes only.

* The "Title Page" means, for a printed book, the title page itself, plus
  such following pages as are needed to hold, legibly, the material this
  License requires to appear in the title page. For works in formats
  which do not have any title page as such, "Title Page" means the text
  near the most prominent appearance of the work's title, preceding the
  beginning of the body of the text.

2. Verbatim Copying
You may copy and distribute the Document in any medium, either commer-
cially or noncommercially, provided that this License, the copyright notices,
and the license notice saying this License applies to the Document are re-
produced in all copies, and that you add no other conditions whatsoever to
those of this License. You may not use technical measures to obstruct or
control the reading or further copying of the copies you make or distribute.
However, you may accept compensation in exchange for copies. If you dis-
tribute a large enough number of copies you must also follow the conditions
in section 3.
   You may also lend copies, under the same conditions stated above, and
you may publicly display copies.

3. Copying in Quality
If you publish printed copies of the Document numbering more than 100, and
the Document's license notice requires Cover Texts, you must enclose the
copies in covers that carry, clearly and legibly, all these Cover Texts: Front-
Cover Texts on the front cover, and Back-Cover Texts on the back cover.
Both covers must also clearly and legibly identify you as the publisher of
these copies. The front cover must present the full title with all words of
the title equally prominent and visible. You may add other material on the
covers in addition. Copying with changes limited to the covers, as long as
they preserve the title of the Document and satisfy these conditions, can be
treated as verbatim copying in other respects.
   If the required texts for either cover are too voluminous to fit legibly,
you should put the first ones listed (as many as fit reasonably) on the actual
cover, and continue the rest onto adjacent pages.
   If you publish or distribute Opaque copies of the Document numbering
more than 100, you must either include a machine-readable Transparent
copy along with each Opaque copy, or state in or with each Opaque copy a
publicly-accessible computer-network location containing a complete Trans-
parent copy of the Document, free of added material, which the general


network-using public has access to download anonymously at no charge us-
ing public-standard network protocols. If you use the latter option, you
must take reasonably prudent steps, when you begin distribution of Opaque
copies in quantity, to ensure that this Transparent copy will remain thus
accessible at the stated location until at least one year after the last time
you distribute an Opaque copy (directly or through your agents or retailers)
of that edition to the public.
   It is requested, but not required, that you contact the authors of the
Document well before redistributing any large number of copies, to give
them a chance to provide you with an updated version of the Document.

4. Modifications
You may copy and distribute a Modified Version of the Document under the
conditions of sections 2 and 3 above, provided that you release the Modified
Version under precisely this License, with the Modified Version filling the
role of the Document, thus licensing distribution and modification of the
Modified Version to whoever possesses a copy of it. In addition, you must
do these things in the Modified Version:

  A Use in the Title Page (and on the covers, if any) a title distinct from
     that of the Document, and from those of previous versions (which
     should, if there were any, be listed in the History section of the Docu-
     ment). You may use the same title as a previous version if the original
     publisher of that version gives permission.

   B List on the Title Page, as authors, one or more persons or entities
     responsible for authorship of the modifications in the Modified Version,
     together with at least five of the principal authors of the Document
     (all of its principal authors, if it has less than five).

   C State on the Title page the name of the publisher of the Modified
     Version, as the publisher.

  D Preserve all the copyright notices of the Document.

   E Add an appropriate copyright notice for your modifications adjacent
     to the other copyright notices.

   F Include, immediately after the copyright notices, a license notice giving
     the public permission to use the Modified Version under the terms of
     this License, in the form shown in the Addendum below.

   G Preserve in that license notice the full lists of Invariant Sections and
      required Cover Texts given in the Document's license notice.

   H Include an unaltered copy of this License.

    I Preserve the section entitled "History", and its title, and add to it an
      item stating at least the title, year, new authors, and publisher of the
      Modified Version as given on the Title Page. If there is no section
      entitled "History" in the Document, create one stating the title, year,
      authors, and publisher of the Document as given on its Title Page,
      then add an item describing the Modified Version as stated in the
      previous sentence.

   J Preserve the network location, if any, given in the Document for pub-
      lic access to a Transparent copy of the Document, and likewise the
      network locations given in the Document for previous versions it was
      based on. These may be placed in the "History" section. You may
      omit a network location for a work that was published at least four
      years before the Document itself, or if the original publisher of the
      version it refers to gives permission.

   K In any section entitled "Acknowledgements" or "Dedications", pre-
      serve the section's title, and preserve in the section all the substance
      and tone of each of the contributor acknowledgements and/or dedica-
      tions given therein.

   L Preserve all the Invariant Sections of the Document, unaltered in their
      text and in their titles. Section numbers or the equivalent are not
      considered part of the section titles.

  M Delete any section entitled "Endorsements". Such a section may not
      be included in the Modified Version.

   N Do not retitle any existing section as "Endorsements" or to conflict in
      title with any Invariant Section.

   If the Modified Version includes new front-matter sections or appendices
that qualify as Secondary Sections and contain no material copied from the
Document, you may at your option designate some or all of these sections
as invariant. To do this, add their titles to the list of Invariant Sections in
the Modified Version's license notice. These titles must be distinct from any
other section titles.

   You may add a section entitled "Endorsements", provided it contains
nothing but endorsements of your Modified Version by various parties�for
example, statements of peer review or that the text has been approved by
an organization as the authoritative definition of a standard.
   You may add a passage of up to five words as a Front-Cover Text, and
a passage of up to 25 words as a Back-Cover Text, to the end of the list of
Cover Texts in the Modified Version. Only one passage of Front-Cover Text
and one of Back-Cover Text may be added by (or through arrangements
made by) any one entity. If the Document already includes a cover text for
the same cover, previously added by you or by arrangement made by the
same entity you are acting on behalf of, you may not add another; but you
may replace the old one, on explicit permission from the previous publisher
that added the old one.
   The author(s) and publisher(s) of the Document do not by this License
give permission to use their names for publicity for or to assert or imply
endorsement of any Modified Version.

5. Combining Documents
You may combine the Document with other documents released under this
License, under the terms defined in section 4 above for modified versions,
provided that you include in the combination all of the Invariant Sections
of all of the original documents, unmodified, and list them all as Invariant
Sections of your combined work in its license notice.
   The combined work need only contain one copy of this License, and
multiple identical Invariant Sections may be replaced with a single copy.
If there are multiple Invariant Sections with the same name but different
contents, make the title of each such section unique by adding at the end
of it, in parentheses, the name of the original author or publisher of that
section if known, or else a unique number. Make the same adjustment to
the section titles in the list of Invariant Sections in the license notice of the
combined work.
   In the combination, you must combine any sections entitled "History"
in the various original documents, forming one section entitled "History";
likewise combine any sections entitled "Acknowledgements", and any sec-
tions entitled "Dedications". You must delete all sections entitled "En-
dorsements."

6. Collections of Documents
You may make a collection consisting of the Document and other documents
released under this License, and replace the individual copies of this License
in the various documents with a single copy that is included in the collection,
provided that you follow the rules of this License for verbatim copying of
each of the documents in all other respects.
   You may extract a single document from such a collection, and distribute
it individually under this License, provided you insert a copy of this License
into the extracted document, and follow this License in all other respects
regarding verbatim copying of that document.

7. Aggregation with Independent Works
A compilation of the Document or its derivatives with other separate and in-
dependent documents or works, in or on a volume of a storage or distribution
medium, does not as a whole count as a Modified Version of the Document,
provided no compilation copyright is claimed for the compilation. Such a
compilation is called an "aggregate", and this License does not apply to the
other self-contained works thus compiled with the Document, on account of
their being thus compiled, if they are not themselves derivative works of the
Document.
   If the Cover Text requirement of section 3 is applicable to these copies
of the Document, then if the Document is less than one quarter of the
entire aggregate, the Document's Cover Texts may be placed on covers that
surround only the Document within the aggregate. Otherwise they must
appear on covers around the whole aggregate.

8. Translation
Translation is considered a kind of modification, so you may distribute trans-
lations of the Document under the terms of section 4. Replacing Invariant
Sections with translations requires special permission from their copyright
holders, but you may include translations of some or all Invariant Sections
in addition to the original versions of these Invariant Sections. You may in-
clude a translation of this License provided that you also include the original
English version of this License. In case of a disagreement between the trans-
lation and the original English version of this License, the original English
version will prevail.

9. Termination
You may not copy, modify, sublicense, or distribute the Document except
as expressly provided for under this License. Any other attempt to copy,
modify, sublicense or distribute the Document 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.

10. Future Revisions of This License
The Free Software Foundation may publish new, revised versions of the GNU
Free Documentation 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. See http://www.gnu.org/copyleft/.
   Each version of the License is given a distinguishing version number. If
the Document specifies that a particular numbered version of this License
"or any later version" applies to it, you have the option of following the
terms and conditions either of that specified version or of any later version
that has been published (not as a draft) by the Free Software Foundation.
If the Document does not specify a version number of this License, you
may choose any version ever published (not as a draft) by the Free Software
Foundation.

ADDENDUM: How to use this License for your
documents
To use this License in a document you have written, include a copy of the
License in the document and put the following copyright and license notices
just after the title page:

Copyright (c) YEAR YOUR NAME.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.1
or any later version published by the Free Software Foundation;
with the Invariant Sections being LIST THEIR TITLES, with the
Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.
A copy of the license is included in the section entitled "GNU
Free Documentation License".

   If you have no Invariant Sections, write "with no Invariant Sections"
instead of saying which ones are invariant. If you have no Front-Cover
Texts, write "no Front-Cover Texts" instead of "Front-Cover Texts being
LIST"; likewise for Back-Cover Texts.
   If your document contains nontrivial examples of program code, we rec-
ommend releasing these examples in parallel under your choice of free soft-
ware license, such as the GNU General Public License, to permit their use
in free software.