Editing Project Xanadu (section)

=== 1990s ===
In 1998, Nelson released the source code to Xanadu as Project Udanax,<ref name="Udanax Green">{{cite web|title=Udanax Green|url=http://udanax.xanadu.com/green/index.html}}</ref> in the hope that the techniques and algorithms used could help to overturn some [[software patent]]s.<ref>{{cite web|title=Udanax Gold|url=http://udanax.xanadu.com/gold/|quote=this disclosure also constitutes prior art that prevents anyone else from preventing you from using the ideas embodied in this code}}</ref>