[Zope] How to access the attributes of a base class?

Hello, I have a ZClass Folder and a ZClass SpecialFolder, which has Folder as base class. Within an instance of SpecialFolder, I need access to a property declared in the base class Folder. Alternatively, I could create a property with the same name like that one from the base class, but this isn't allowed! BTW, it would be nice if this was possible in order to hide the original value - iirc this is usual in object oriented contexts. Does anybody have a suggestion how to do it via DTML? TIA. -- Lars Heber, mailto:Lars.Heber@t-systems.com T-Systems, debis Systemhaus GEI GmbH, Geschaeftsstelle Sachsen