Can You Compress Berkeley DB Databases?

Paul Gear asks: "I'm wanting to create a database using Berkeley DB that includes a lot of textual information, and because of the bulk of the data and its obvious compressibility, I was wondering whether it was possible to have the DB libraries automatically compress it at the file level, rather than me compressing each data (rather small) item before putting it in (which would result in much less gain in compression). Section 4.1 of the paper "Challenges in Embedded Database System Administration" talks about automatic compression, but that is the only place in the documentation that it is mentioned. Can anyone point me in the right direction?"