If you are thinking of using site-wide config files then you may want to take a look at Template::Toolkit. It enables you to include things like pre-loaded config files and also insert config files into your site using the INCLUDE command.

Admittedly, Template::Toolkit is too complex for simple sites, and I haven't had time to look at yours, but if you say you are developing something for a large number of CGI programs then it can be a real timesaver!

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