Visibility of objects

Plone 4.3.3 (4308)
Zope 2.13.22

Where can I find information on the structures available to python 
scripts within plone? I use custom validators for ploneformgen forms, 
and the syntax for referring to a script is 
python:folder.isMyScriptGood(). I gather that "folder." refers to the 
current container, the same as "./" in a *nix file system. How would I 
use a script in a different location? Multiple forms would have the need 
for the same time format validator, for instance.

Also, within scripts we have structures like "container", etc. A recent 
post here referenced "python:root.site.links". Where are these things 
documented? At this point, it is JFM to me, and I am not comfortable 
with that.

Thank you,

-- 
Chuck Theobald
System Administrator
The Robert and Beverly Lewis Center for Neuroimaging
University of Oregon
P: 541-346-0343
F: 541-346-0345


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