We have some BTreeFolder2's containing hundreds of thousands of objects, even one containing
 over 2 million instances of Folder. That is really no problem in itself. 

Under our setup, beyond 300-400,000 contained objects, the batching provided by getBatchObje
ctListing becomes unusable. I've seen this problem mentioned somewhere but never any hint of
 a solution.

We have a new application that will require pagination, or ideally, the ability to go forwar
d and back through the items (any order). Is there a way to refer to the contained items by 
something like offset? It might be easy if the objects had sequential, consecutive numeric i
ds, but sadly this cannot be the case.

We are using the BTreeFolder2-1.0.2 version that came with Zope 2.10.

Thanks.

Ken