Clearing SharedObject values?

I just got done learning the basics of SharedObject from you tutorial
http://www.kirupa.com/developer/mx/sharedobjects.htm

I don’t use flash but use an alternative called Koolmoves.

It works wonderfully. Now I have a way to create a user login for additional features and more.

There is however, one issue you didn’t make note of…How do I clear the data or set it to expire or allow the user to log out or both?