New withlist item: [[!meta redir]] -- tell what's going on

doc/users/tschwinge.mdwn

@@ -87,6 +87,12 @@ pages could perhaps be passed on to the referred-to page?
 > I found that backlinks was an easy way to find such links to such pages.
 > (Although the redirection made it hard to see the backlinks!) --[[Joey]] 
 
+## \[[!meta redir]] -- tell what's going on
+
+Add functionality that a text like *this page's content has moved to [new
+page]; in a few seconds you'll be redirected thither* is displayed on every
+page that uses \[[!meta redir]].
+
 ## Sendmail -- [[todo/passwordauth:_sendmail_interface]]
 
 ## [[bugs/Broken Parentlinks]]