[Zope] ReportLab in Script (Python)

Hello, some time ago, I have read an article, which had the complete set of allow_class and allow_module statements inside, which are neccessary to work with reportlab in pythonscripts. Does anybody know the url to this article (I think it was on Zope.org)? I can't find it anymore. Even a search on google didn't find it. Regards Florian Reiser