Uncheckout Work

In Tortoise CVS when I was finished with checked out work I had the option
to perform a "Release" in which the files I'm working on our released from
my control without having to commit anything back to the repository. Does
Tortoise SVN have something similar?

Ex: If I check out a project and then decide that I don't want to do
anything with it how can I release it?

Ex: If I have made my changes and committed them to the repository the
working copy still remains in my directory structure with the checkout
marks. How do I release them so that I don't have them checked out anymore?

Ex: Is there an option where I can checkout a copy of a project then
release version control of the project but maintain a copy in my directory?

Thanks,

Ben

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