Use of Document Area/Document Space in KPro

Hi,

I hope this is the correct forum for my question. If not, suggestions are welcome.

We are using KPro to store documents for quality notifications.

While configuring content repositories (Tx OAC0) and content categories (Tx OACT) I found the field "Document Area" (sometimes referred to as "Document Space"). The documentation on that topic is not very helpful. Could anyone tell me, what's the use of a document area/space? Examples would be very helpful.

Thanks,

Marcus.