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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
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+/*!
+
+\page opensourceedition.html
+
+\title Qt Open Source Edition
+
+Open source software (also called "free software") is software that comes
+with a license that gives users certain rights. In particular the right to
+use the software, to modify it, to obtain its source, and to pass it on
+(under the same terms).
+
+Trolltech supports the open source software concept by providing the Qt Open Source
+Edition. You can use this edition of Qt to create open source software, i.e.
+software that is licensed under the GNU GPL or a similarly recognized
+open source license. Trolltech's support of open source with the Qt Open Source
+Edition has enabled large successful software projects like KDE, to
+thrive, with thousands of developers around the world using the Qt Open Source
+Edition at no cost to themselves. The Qt Open Source Edition is available for
+Unix/X11, Macintosh, and embedded Linux.
+
+The Open Source Edition can be downloaded from here:
+\l http://www.trolltech.com/download/.
+
+It is also possible to develop commercial software using Qt, but to do
+so you must buy a commercial license for the \link
+commercialeditions.html Professional or Enterprise Edition\endlink. If
+you buy a commercial edition of Qt you can sell your software for any
+price and with any license you like. Thousands of commercial companies
+use commercial editions of Qt to develop the products they sell.
+
+If you use the Qt Open Source Edition, there are certain licensing
+conditions that the GNU GPL imposes on you, to ensure that your users
+enjoy the freedoms guaranteed by the GPL. Users are entitled to:
+
+\list 1
+\i Run your software for any purpose.
+\i Obtain and study your software's source code, and adapt it to their
+ needs.
+\i Redistribute your software and its source code to others (under the
+ same terms).
+\i Improve or modify your software, and release these changes to the
+ public.
+\endlist
+
+These freedoms apply to all the source code for all the modules your
+software is based on, regardless of whether they have been written by
+you or by others. The freedoms also apply to any associated interface
+definition files, and even include the scripts and control files used
+to control compilation and installation of the executable; otherwise
+users could not exercise their rights.
+
+This means that you cannot use the Qt Open Source Edition if your software
+must be built with any modules that impose conditions on you that
+contradict the conditions of the GNU GPL, including, but not limited
+to, software patents, commercial license agreements, copyrighted
+interface definitions or any sort of non-disclosure agreement. In
+these circumstances you must use a commercial edition of Qt.
+
+See the \link faq.html FAQ \endlink for answers to frequently
+asked questions on Qt Open Source Edition licensing and its implications.
+
+More information on open source software is available online:
+
+\list
+\i GNU GPL: \l http://www.gnu.org/
+\i Open source licensing: \l http://www.opensource.org/
+\endlist
+
+Information about Qt Commercial License Agreements is available at
+\l http://www.trolltech.com/pricing.html. You can also email
+<a href="mailto:sales@trolltech.com">sales@trolltech.com</a>.
+
+If you are in doubt what edition of Qt is right for your project,
+please contact
+<a href="mailto:info@trolltech.com">info@trolltech.com</a>.
+
+*/