  ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
  DOUBLE DOWN 10 & 11 ONLY
  ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀

  The player may only double down on
  hard totals of 10 & 11.

  If this card is set to 'N'o, the player
  may double down on any 2 cards.


  TECHNICAL NOTES:
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  This rule costs the player approximately
  -.28%.
