Editing VP3 (section)

===Move to free software===
In September, 2001 it was donated to the public as [[open source]], and On2 irrevocably disclaimed all rights to it, granting a royalty-free license grant for any patent claims it might have over the software and any derivatives,<ref name="theoraspec">{{citation | author=Xiph. Org Foundation | title = Theora Specification | url = http://theora.org/doc/Theora.pdf | access-date=25 September 2009 | date = 5 August 2009 | publisher=Xiph. Org Foundation}}</ref> allowing anyone to use any VP3-derived codec for any purpose.<ref name="theora-license">Xiph.org [http://svn.xiph.org/trunk/theora/LICENSE libtheora license (Subversion - Trunk)], Retrieved on 2009-08-16</ref><ref name="vp32-license">Xiph.org [http://svn.xiph.org/trunk/vp32/LICENSE VP32 codec license (Subversion - Trunk)], Retrieved on 2009-08-16</ref>
In March 2002, On2 altered licensing terms required to download the source code for VP3 to [[GNU Lesser General Public License|LGPL]].<ref>The Free Library (2002-03-28) [http://www.thefreelibrary.com/On2+Alters+Licensing+Terms+for+VP3%3b+Company+Responds+to+Open+Source...-a084233138 On2 Alters Licensing Terms for VP3; Company Responds to Open Source Community Demands.] {{Webarchive|url=https://web.archive.org/web/20101204092727/http://www.thefreelibrary.com/On2+Alters+Licensing+Terms+for+VP3%3b+Company+Responds+to+Open+Source...-a084233138 |date=2010-12-04 }}, Retrieved on 2009-08-16</ref>