what would be the best to rollback wiki changes, like the spam on
edgewall posterity, e.g. 
http://posterity.edgewall.org/wiki/WikiRestructuredTextLinks?action=diff&version=2
?

mediawiki has an "edit" and "undo" link on every entry in the history
(http://en.wikipedia.org/w/index.php?
title=Wikipedia:Sandbox&action=history), and also on the difference
displayed (e.g. 
http://en.wikipedia.org/w/index.php?title=Wikipedia%3ASandbox&diff=305252402&oldid=305250743).
pressing edit opens the old revision, save saves it as current. the
undo link only works if one wants to undo the last edits

mediawiki also displays diff links to the previous, next, and current
revision if an old revision is displayed, see here:
http://en.wikipedia.org/w/index.php?title=Wikipedia:Sandbox&oldid=305249764.

it features also an extension to undo everything a vandal did, see
http://www.mediawiki.org/wiki/Extension_talk:Nuke.

kr, rupert.


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