Thread:Project:Support desk/How to add text to several pages automatically ?

Hi, I looked in the help pages but couldn't find an answer. I need to add text to several pages of our mediawiki automatically to add a licence. Is there a extention to do that ? The wiki is wiki.april.org. The versions : Thanks for your help.
 * MediaWiki: 1.12.0
 * PHP: 5.2.6-1+lenny13 (apache2handler)
 * MySQL: 5.0.51a-24+lenny5-log