[Zope] Property Sheet Question

[James W. Howe]

I'm defining a property sheet for a new ZClass object.  I want to define a 
property which is collection of items (in my current case it's strings, but 
conceptually it could be something else).  When a new instance is created 
(or edited), I want the user to be able to specify 0 or more items.  Is 
there a property type which supports this?  What, for example, are "lists" 
and "tokens" and how do you make use of them?  In the particular case that 
I'm working on, I want a user to be able to enter one or more e-mail 
addresses and one or more urls.  At some point I will want to iterate over 
the e-mail addresses, or iterate over the urls when I construct a view for 
this object.

Any tips or insights on this subject would be appreciated.

Thanks.

James W. Howe				mailto:jwh@allencreek.com
Allen Creek Software, Inc.		pgpkey: http://ic.net/~jwh/pgpkey.html		
Ann Arbor, MI  48103