I've released the code that does this. It used to be part of a complicated
billing system, so it's been cut down quite a bit. It's functional, and there's
a small demo showing how it works.
It should be quite easy to modify to suit anyone's needs. Make sure to read
the Readme.txt file in the docs directory.
It's available here (BSD License);
I'm looking for a new job, I'd like to keep doing Zope work, so if you're
looking for someone... d8)
Zope maillist - Zope@zope.org
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