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Clarification of the ""question mark"" paragraph 

I know that the question mark balls are used as wild cards, but I don't understand the following. ""A variety of unusual situations can arise during a game. According to an unauthenticated first-person account by a contestant (A Brush with The Chuck), a wild-card-substituted number drawn in a subsequent round is ignored; the segment is edited out of the aired version of the show"". What do you mean it's ignored, I doubt anybody understand what you meant. Thanks  "