more complex rules.xml examples?

I apparently need to use rules.xml to accomplish some of the gnarlier things I'd like to do with the autoinstaller. Unfortunately, the examples in the autoyast.pdf I have are pretty simple. Does anybody have pointers to more complex examples? (Like, ones that use multiple rule matches, config file merging, etc. etc.) thanks, john. -- "A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it." - physicist Max Planck