6.1 Penalty Double

6.2 Penalty, Best Positive Score

6.3 Balancing Double

6.4 Unusual 2NT

6.5 Lead Directing Doubles

6.6 Less Solid Suit, More Values

6.7 Overcalling Our Suit

6.8 Michaels Over a Transfer

6.9 Unusual NT in 4th Seat

6.10 Showing Both Suits