Correct.

Also, go to http://www.darwinfo.org and search the developers and users forums there for fstab and swapfile.

One of the developers plainly states that fstab does not do what you might think it does in Darwin, and explains why the methods involving changes to /etc/rc - while not what they originally had in mind - are AOK.

The idea of just specifying it in fstab would basically work for any of the other Unices I've seen - wait - they all do that but Darwin! :)

It's also important to stress that Darwin does not support swap partitions, only swapfiles. Also, Darwin's swapfiles are managed dynamically, so they can grow or shrink as needed - in about 80MB chunks.

The man pages might work for application level stuff, but for system's stuff, go to the Apple developer pages and the darwinfo site. As is often the case, the man pages aren't keeping up. (And I don't knock Apple for this. The heralded Linux - which I also use and like - is rife with "note this manpage is no longer being maintained...")