Raise over double with a good hand

Katherine Mansfield, an author from New Zealand who died in 1923, said, "The pleasure of all reading is doubled when one lives with another who shares the same books."

The pleasure of all bridge playing is doubled when one lives with another who shares the same bidding and defense agreements.

We are studying responder's raising of partner's major with a good hand after righty throws in a takeout double. Yesterday, I mentioned that a response of two no-trump shows four or more trumps and game-invitational values. With a game-force, responder jumps to three no-trump. (It is possible to combine the two, responding two no-trump with game-invitational values or more. Then three no-trump can have a different meaning, perhaps a pre-emptive raise to game with a side-suit defensive trick. Discuss this with your partner.)