it's pretty simple/clever.
Two modes:
1. a kickstart switcher - keep 2 kickstarts, and switch between them
2. a "big" kickstart; e.g. a 1 mb sized kickstart which allows you to have not only to have the normal KS stuff... but to add any other libs you want to be available at boot.
very neat :-) I might need to get one :-)
Tom UK