@@ -106,51 +106,51 @@ Copyright \> \copyright{} 2014--2015 \> Anthony K. Sebro, Jr. \\
Copyright \= \copyright{} 2014 \> Denver Gingerich. \\
Copyright \= \copyright{} 2003--2007, 2014 \> Free Software Foundation, Inc. \\
Copyright \> \copyright{} 2008, 2014 \> Software Freedom Law Center. \\
\end{tabbing}
\vspace{.3in}
The copyright holders grant the freedom to copy, modify, convey,
adapt, and/or redistribute this work (except
Appendices~\ref{GPLv2-full-text}--\ref{AGPLv3-full-text}) under the terms of the Creative Commons
Attribution Share Alike 4.0 International License. A copy of that license is
available at \url{https://creativecommons.org/licenses/by-sa/4.0/legalcode}.
Appendices~\ref{GPLv2-full-text}--\ref{AGPLv3-full-text} include copies of the texts of various licenses published
by the FSF, and they are all licensed under the license, ``Everyone is permitted
to copy and distribute verbatim copies of this license document, but changing
it is not allowed.''. However, those who seek to make modified versions of
those licenses should note the
\href{https://www.gnu.org/licenses/gpl-faq.html#ModifyGPL}{explanation given in the GPL FAQ}.
\vfill
As a public, collaborative project, this Guide is primarily composed of the
many contributions received via its
\href{https://gitorious.org/copyleft-org/tutorial/source/master:CONTRIBUTING.md}{public
\href{https://k.copyleft.org/guide/files/master/CONTRIBUTING.md}{public
contribution process}. Please
\href{https://gitorious.org/copyleft-org/tutorial/history/master}{review its
\href{https://k.copyleft.org/guide/changelog/master/}{review its
Git logs} for full documentation of all contributions, and
Appendix~\ref{third-party-citation-list}
contains a list of third-party works from which some material herein was
adapted.
The most recent version is
available online at \url{https://copyleft.org/guide/}. Patches
are indeed welcome to this material. Sources can be found in the Git
repository at \url{https://gitorious.org/copyleft-org/tutorial/}.
}
\end{center}
\end{titlepage}
\tableofcontents
\chapter{Preface}
This tutorial is the culmination of nearly a decade of studying and writing
about software freedom licensing and the GPL\@. Each part of this tutorial
is a course unto itself, educating the reader on a myriad of topics from the
deep details of the GPLv2 and GPLv3, common business models in the copyleft
licensing area (both the friendly and unfriendly kind), best practices for
compliance with the GPL, for engineers, managers, and lawyers, as well as