I wrote:
As far as I understand it, users of our material have to provide history of contributors, and we suggest that they link back to our article to fulfil this obligation. Alternatively, there is nothing to stop them just copying our history and use that instead, without linking to us (strictly, they may not even have to credit 'Wikipedia' at all).
Looks like I was wrong here: section 4J of the FDL *requires* giving the network location of previous versions of the document, so they would have to link back to the original text. I think the Wikipedia:Copyrights page could do with changing to make that clearer.
Also note section 4K of the GFDL which requires preserving pre existing acknowledgements and dedications.
Tim (Enchanter)
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