swap partition encryption

[Robert Storey]

Dear All,

I've succeeded in creating an encrypted partition using gbde. I followed
the directions in the FBSD Handbook which, among other things, states:

   Unlike cumbersome encryption methods that encrypt only
   individual files, gbde transparently encrypts entire file systems.
   No cleartext ever touches the hard drive's platter.

But I wonder if that last sentence is true. What about the swap
partition? Is it simply bypassed, or does one need to do something to
create an encrypted swap partition?

regards,
Robert