Does a cvs update update the ports tree?

[stan <stanb@panix.com>]

I'm building a couple of current machines for testing carp. I've installed
from the snapshot floppy, and the done a cvs update, and a build. 

Does the cvs update alos update the ports tree? If not, how should I do
that. download the tarball from the snapshosts directory, rm -r /usr/ports,
and the unpack the new tarball? Sounds too kludgey to be correct.

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