[Zope] Python Script that modifies a document property

Frustrated... I want to have a python script that, when called from a dtml-document, will modify the properties of that document[1]. How do I get to the document itself? context and container both reference the the folder with the python script in it! -- cary [1] In the long run I want a unconnected (not-in-a-z-class) python script that can do things to a z-class that has properties and acts like a folder and has things in it. I want the script to be able to modify properties based on other properties, and access the sub-objects. Think workflow rules.