The "copy to clipboard" message attempts to copy the specified text to the clipboard. If it succeeds, the tiddler [[$:/language/Notifications/CopiedToClipboard/Succeeded]] is displayed as a notification. If the browser doesn't permit the operation, the tiddler [[$:/language/Notifications/CopiedToClipboard/Failed]] is displayed instead.
It requires the following properties on the `event` object: