>The build system is designed to allow the addition
of configurations with minimal effort. It achieves this by evaluating
some magic variables from the configuration snippet and feeding some
generic rules you hopefully never need to know about.
>An initrd preseed file to append to any other
preseed file put in the initrd by PRESEED; used to preseed the suite
for daily builds.
>Archive components from which to fetch .udeb packages. Defaults to main/debian-installer.