%REDIRECT{}%
variable is handled by the RedirectPlugin.
%REDIRECT{"TopicName"}%
%REDIRECT{"ExampleTopic"}%
redirects to the ExampleTopic topic
%REDIRECT{"OtherWeb.ExampleTopic"}%
redirects to the OtherWeb.ExampleTopic topic
%REDIRECT{"http://twiki.org/"}%
redirects to http://twiki.org/