The redirect tag can be used to redirect the user to a new location.
<cms:redirect url='http://www.google.com/' />
<cms:redirect url="<cms:link masterpage=k_template_name page='test' />" />
In the last example above, the user is being redirected to a page named test that is a cloned page of the same template as the page this code is executed from (the link tag is being used to get the target URL).
This is the URL of the location being redirected to.
By default, the redirect tag causes the server to send back a HTTP 302 redirection code. Setting this parameter to 1 will cause it to send back HTTP 301 (moved permanently) code instead.
<cms:redirect url="<cms:link masterpage=k_template_name page='test' />" permanently='1' />
It is self closing tag and sets no variables of its own.