[Zope] Generating non-existent documents on the fly?

Is there a way to generate non-existent documents on the fly - some kind of "rewriting" the target URL? Example site structure /root (http://localhost/) /content layout_template some_txt A user queries http://localhost/content/some.html Obviously, "some.html" does not exist. This is where some mechanism (the one I am trying to find <g>) kicks in. It will analyze the query string, detect that there is "some_txt" and "layout_template". Based on that it will generate "some.html" on the fly. Any ideas? I'd rather not want to have question marks in the query; my attempts to play with standard_error_handler unfortunately did not yield anything. Thanks!