let P be a product (python), with instance PI. In product code: class P(SimpleItem): ... aForm=DTMLFile('aForm', globals()) ... def m(..., REQUEST=None): """modify inner state of PI""" ... if REQUEST is not None: # called via web return ??? # where-m-was-called-from, # redisplay w different state of PI In File aForm.dtml which displays PI's state: ... <a href="m?...">xxx</a> In order to return from m(...) and redisplay PI's state, usually (eg http://www.zope.org/Members/maxm/HowTo/minimal_01) one writes return self.aForm(self) However, i want to call m from several different forms, ultimately some user i dont know will use DTML-Document i dont know, to use it in his own software. HOW-TO with one mouse-click a) effect call of m (preferably via href) b) effect redisplay of the DTML-document i tried redirect(HTTP_REFERER), (well, i've several calls of m, urls get mangled, one m( ) is delete!!) additional parameter m( ..., url) fed with a)<dtml-var URL0> inside product code gives url just called, not just displayed b)<dtml-var absolute_url url_quote> just gives .../PI, not .../PI/aForm