From the readme file: * Quarantining ill norns * Keeping the grendel in his place * Isolating 2 norns for teaching/breeding purposes * Keeping groups of creatures seperated from each other * Isolating a norn so you can get him to eat/sleep The COB also turned out to be popular among norn torturers, for keeping norns in their place. A modified version for C1 is available at Muppetboy's Geatville. The Force Field uses object class numbers: * 2 14 78 * 2 14 79 * 2 14 80