<P> A "Daily Double" is hidden behind one clue in the Jeopardy! round, and behind two in Double Jeopardy! The name and inspiration were taken from a horse racing term . Only the contestant who uncovers a Daily Double may respond to that clue and need not use his / her signaling device to do so . Before the clue is revealed, the contestant must declare a wager, from a minimum of $5 to a maximum of his / her entire score (known as a "true Daily Double") or the highest clue value available in the round, whichever is greater . A correct response adds the value of the wager to the contestant's score, while an incorrect response deducts it . Whether or not the contestant responds correctly, he or she maintains control of the board . </P> <P> During the Jeopardy! round, except in response to the Daily Double clue, contestants are not penalized for forgetting to phrase their response in the form of a question, although the host will remind contestants to watch their phrasing in future responses . In the Double Jeopardy! round and in the Daily Double in the Jeopardy! round, the phrasing rule is followed more strictly, with a response not phrased in the form of a question counting as wrong if it is not re-phrased before the host or judges make a ruling . If it is determined that a previous response was wrongly ruled to be correct or incorrect, the scores are adjusted at the first available opportunity . If, after a game is over, a ruling change is made that would have significantly altered the outcome of the game, the affected contestant (s) are invited back to compete on a future show . </P> <P> Contestants who finish Double Jeopardy! with $0 or a negative score are automatically eliminated from the game at that point and awarded the third place prize . On at least one episode hosted by Art Fleming, all three contestants finished Double Jeopardy! with $0 or less, and as a result, no Final Jeopardy! round was played . This rule is still in - place for the Trebek version, although staff has suggested that it is not set in stone and that executive producer Harry Friedman may decide to display the clue for home viewers' play if such a situation were ever to occur . During Celebrity Jeopardy! games, contestants with a $0 or negative score are given $1,000 for the Final Jeopardy! round . </P> <P> The Final Jeopardy! round features a single clue . At the end of the Double Jeopardy! round, the host announces the Final Jeopardy! category, and a commercial break follows . During the break, barriers are placed between the contestant lecterns, and each contestant makes a final wager between $0 and his / her entire score . Contestants write their wagers using a light pen to write on an electronic display on their lectern . After the break, the Final Jeopardy! clue is revealed and read by the host . The contestants have 30 seconds to write their responses on the electronic display, while the show's iconic "Think!" music plays in the background . In the event that either the display or the pen malfunctions, contestants can use an index card and a marker to manually write their response and wager . Visually impaired or blind contestants use a Braille keyboard to type in a wager and response . </P>

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