5.1 Balancing Double

5.2 Balancing Choice

5.3 More Balancing Choices

5.4 Balancing with a Strong Hand

5.5 Reopening Double

5.6 More Reopening Doubles

5.7 Length in the Opponent's Suit

5.8 Higher Level Reopening Doubles

5.9 Balancing and Reopening

5.10 Reopening by Responder

6.1 Doubles of Low Level Artificial Bids

6.2 Doubles of Strong Artificial Bids

6.3 Takeouts Double of Artificial Bids

6.4 "Card Showing" Double opposite 1NT

6.5 Negative Double opposite 1NT

6.6 Responder's Double of NT Bid

6.7 Advancer's Double of NT Bid

6.8 Opener's Double of NT Bid

6.9 Double After Finding Fit

6.10 Maximal Double