Standard Components in XI R2 ?

Hello!

I have a potential customer who currently has a license for Business Object XI Release 2 ...

... however, they do not seem to have a firm grasp on exactly what they own. Can someone give me a brief rundown on what the "standard complement" of products/modules/components were that were included with XI R2 ... and which items were available as add-ons?

THX!

E.