[Zope] finding out where a (property) value was acquired from

[Mitchell L Model]

Is there a way to find out where a value (specifically a property 
value, but the answer's probably not dependent on that) is acquired 
from?  I have a hierarchy of folders, with some properties set in 
high-level folders that apply to all the folders below them. 
Sometimes an action needs to change these values, but they should 
change in the folder they were acquired from not the current folder.

Is there something built-in to Zope that gives me the folder a value 
(or a property) was acquired from?  Or do I simply have to walk the 
path back towards the root to find it?