[Zope-dev] Licence of ZopeLDAP Product ?

Hi all, I can reach the author of ZopeLDAP Product ( http://www.zope.org/Members/jshell/ZopeLDAP). I'll like to know, which licence is used by ZopeLDAP Product, and how can we contribute to this Product ? Thanks for your help. -- Nicolas Delaby http://www.nexedi.com/