BridgeHands

Support Redouble - The use of a redouble to show 3 or 4 card support for responder's major suit:
 

1x - (P) - 1H - (X); P	Pass shows less than 3 Hearts
1x - (P) - 1H - (X); XX	Redouble shows 3 card Heart support
1x - (P) - 1H - (X); 2H	2H shows 4 card Heart support

Also see Support Double