[Zope] Non-persistent ZClasses?

I am trying to create non-persistent ZClasses. I have seen no examples of this anywhere in the online Zope realm, but I have seen several references to "non-persistent wrapper classes," but no one seems to be able to provide an example. I could be going about my project incorrectly, but this really seems to be the best approach. Is anyone out there familiar with creating these and can give me some examples of constructors (python preferred, but will take whatever you have at this point!) and adding instances programmatically? Thanks, -- John Coleman jcoleman@sbc.edu -- Rev 13:16-17, translated for the information age: http://www.passport.com --