Reverse Flannery is a good approach for using a 2-level jump shift by Responder to deal with some problem Major suit hands.
(256) Inverted Minors and 1D - 2C Auctions with Structure
(255) Responder's Unusual 2M Jump Shifts and NT Bids
(228) Preempt Keycard
(216) Advanced Bidding: Transfer Rebids After 1H - 1S
(215) Advanced Bidding: Transfer Wolff Over 2NT Rebids
A jump rebid of 2NT by Opener, showing a balanced hand with 18-19 points, takes up a lot of bidding space and can put pressure on Responder to show their hand and keep the auction below 3NT. Here we look at a modern sophisticated approach to solving this problem - Wolff Signoff with Transfer Rebids!