[Zope] CMFTopic problem, passing args in DTML, or just brain damage?

[marc lindahl]

If I create a CMFTopic in the root called 'list', why does this work:

http://servername.com/list?Subject=something

...giving me whatever my criterion is, narrowed by matching
Subject='something'

...when calling the thing in DTML:

list(_.None,_,Subject='something')

doesn't seem to recognize the parameter?  (and, I've tried many variations,
wrapping with a dtml-with, passing 'list' instead of _ or _.None, passing a
dict {'Subject':'something'}, all the same result)

what am I missing?