[Zope] preseve status of dtml-tree

Hi! I have a single page (should be no frames) with a dtml-tree. There are plenty of links on this page to itself, with different arguments. My question is how to preserve the status of dtml-tree, because now it is lost after invoking the page again by such a link. I know that dtml-tree is deprecated, but it has the ability to build itself from a query, and I have not found this in ZopeTree, that's the only reason I'm still using it. tnx Lac