DOCBOOK-APPS: Custom dsssl driver with modular stylesheets

The problem I'm trying to solve is to control the order of the address
elements within the author of the titlepage of an article.

It appears that the change that I need to make is in the (element address
...) within (mode set-titlepage-recto-mode ...).

The question:  What is the recommended way to make this change?  Do I need
to copy the entire mode to my custom driver file?  Is there a way to simply
redefine just the element that I want to change?

Thanks,
Lane.
-- 
Lane Stevens
Terrapin Technologies, Inc.
http://www.cycletime.com