I now have gotten a version of tpValues that seems to do the job and allows display of the DOM in tree form without the noise of the inserted DOM nodes -- necessary if the display is to make sense from the XML source. The fix was to simply detect node types with special names (I did not match against the legal ones, only against the leading character ('#'), so this is a quick workaround not a solution. The problem I have is that to get it all to work I needed to do it by brain surgery, actually modify the Product sources. None of the usual mechanisms has the right namespaces, or so it appears. This has the disadvantage that it effects everything that uses the tree widget on the DOM, including the management screens. I've not checked yet as to what I did there. :-| The change is pretty simple -- in ManageableDOM.py: def tpValues(self): """Return a list of immediate subobjects. Used by the dtml-tree tag. If it's a system inserted tag (e.g., #<something> ) just add the children in instead. This should always be unary.. -dra """ retList = [] # dtml-tree wants to own this for i in self.childNodes: if( i.nodeName[0] == '#'): kids= i.childNodes for k in kids: retList.append(k) else: retList.append(i) return retList