has clause Artistic License Distribution with notices Artistic License 1.0 http://www.gnu.org/licenses/license-list.html, accessed 13 June 2013. Allyson Lister The Artistic License v1.0 is not considered a free software license by the definition of the GNU Project because it is too vague; some passages are "too clever for their own good", and their meaning is not clear. The GNU Project recommends that it is not used except as part of the disjunctive license of Perl. Andy Brown