[Zope] post-publishing hook

Dear all, I need a sort of post-publishing hook (so to say). I need Zope to call a function of mine as the very last action of publishing a request, i.e. after having built the response (and sent it to the browser possibly), but before starting publishing a new request. My Zope server is running as a single-threaded app. Does Zope support this any way? Thanks for helping, cheers, Carlo.