In images you can add a statement like that in the lisense but not in
normal wikipedia. If an editor beleived that once his edit was on the
wiki server it was no longer his (copyright) but part of the world
and beleived that he had reliniqushed all rights would that class as a
release? Although essentially he misunderstood his rights, does this
kind of tort have any validity in US law?
No. I release would be someone writeing something
along the lines of
"I release you from the requirement to credit me for this work"
Of course such a stamtent may not have legal force in all countries.
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geni