I have an external method that is capable of generating a PNG image in response to some input data. I would like to use this in the context of Zope to display a computed image on the fly. I am looking for suggestions on a couple of fronts: how can I wire this infrastructure into DTML and how does one write directly back to the browser from an external method? Here are my first guesses on both fronts. For DTML, my thinking is along the following lines: <IMG SRC="GenerateGraphics"> Here, I imagine that "GenerateGraphics" is an external method. I read somewhere (although I can't recall where), that an external method can take RESPONSE as an argument. So, on the second front, I am imagining that the external method uses RESPONSE to set the content type and then writes the results using the RESPONSE.write() method. Am I on the right track here? David S. Harrison (dsh@magma-da.com)