[Zope] HELP: External methods as methods of objects...

[M. Papillon]

After searching through the archives for something relevant it seems like 
most people are calling external methods from DTML, rather than accessing 
them directly through the web.  So I guess my first question is, is there 
a big reason for that?

My real question:

I've set up an external method that is meant to parse the file it is 
called on.  So if my folder has a File object called "spam", and my 
external method "parse", I can call "/spam/parse" to call the method on 
the object spam: self.id() is "spam".

However, as far as I can tell this only works for files and folders; if I 
try it on a DTML Document I get a missing docstring error.

You can't add __doc__ as a property, and there's a __doc__ both at the 
top level of my module and for the function.  Any way around this?

You can see my minimal failed example at
http://www.zope.org/Members/aez/example

TIA...