There isn't a lot of description of this because most people don't want to do this - most f the value of SA comes in the rules packaged with it that have been tested to hit current spam.
That said, you probably these days need an init.pre to enable som plugins
and a local.cf with some minimal configuration in it. And the one or two
rules you want to run. Additional rules can be put into anything.cf in the
same directory with local.cf, adn the files will be read alphabetically.
Loren
