Other Conventions. Fourth Suit Forcing: A bid in the fourth suit at 2 level forcing to 2NT or 4m Suction over Opponents Opening Bid – Note 14 Splinter bids/fragment jumps by opener Reverses and simple change of suit by opener Forcing after a 2 level response. Reverses may be light if shapely. Jump bids after 2 level response are fragments
Appears in 2 contracts
Sources: Competitive Auctions, Competitive Auctions