UBB.threads PHP Forum Software Community Forums UBB.threads 6 Version 6 Support What are Content Islands?

Am I the only one that doesn't know what a Content Island is? The UBB.T manual (page 23) introduces the subject like everyone knows all about Conent Islands. There is no explanation of what a CI is, or why I might want to implement this feature.

A search of the UBB.T forums doesn't produce anything useful, and a Google search finds other people's Infopop CI's.

So, would someone kindly point me to a place where I can learn more about this feature?

Thanks!