On Apr 14, 2007, at 12:29 PM, John Lee wrote:
The GFDL is non-exclusive, meaning that although you cannot retract the licence, you can license the same GFDLed material under another licence, as you retain the copyright to it: "You can later republish and relicense them in any way you like." It is indeed impossible to revoke the GFDL for material placed on WP; nobody is stopping you, however, from placing that same material under a different licence in the future.
Now I get it. Thanks.
-- Jossi