[Zope] Newbie question

I am just getting started in Zope and have what is probably an obvious question. I have an external method that returns a list. I understand how to write dtml to iterate through the list using <dtml-in>. My question is how do I write a dtml-method that takes the current sequence-item and does something in it. So in index_html <dtml-in "my_external_method()"> <dtml-var the_other_dtml_method(sequence-item)> </dtml-in> And in the other dtml-method, how do I access the sequence-item passed in? Thanks, -- Greg Green e-mail: gpgreen@olywa.net http://www.olywa.net/gpgreen/