[Zope] <dtml-var> namespace resolution monitoring?

Hello everyone, I am currently working with a large DTML script that someone else wrote and I am stuck. I am trying to determine how a certain <dtml-var foo> is being resolved from the namespace. More precisely, I know that it is not acquiring its value from the 'REQUEST' object (i checked). This leaves two possible sources, a <dtml-in> tag that surrounds 'foo' and through acquisition. Can anyone suggest some strategies for determining where a <dtml-var> is resolving its value from? __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com