Some test cases used in this software rely on articles written in Wikitext that
were taken from the English, French and Spanish Wikipedia. These articles are 
licensed under the Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license 
which can be found at http://creativecommons.org/licenses/by-sa/3.0/. Each 
directory that contains such files holds a NOTICE file which gives detailed 
information about the origin of the articles.
