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This template adds some extra hidden content to a page, to be picked up when it's shared on Facebook. Note that this template must be the first thing to appear on a page for it to work, and the "title" parameter will only work on wikis with Manual:$wgRestrictDisplayTitle set to false (wikimediafoundation.org is one of these). Facebook's debugger can be used to test, and force an update of their cache.

|title = Title for sharing. Default is "Keep Wikipedia Free".
|description = Description of the link. For some reason this has to be above a certain (undetermined) length or it won't be picked up. Test with the debugger.
|image = Relative URL of image to display, default is "//upload.wikimedia.org/wikipedia/foundation/9/9a/Wikimediafoundation-logo.png"