Romex 2NT - 3♥ -  

3♠       =    3- card ♠ or 4 card ♠, balanced and 6- CT    ➲

⚠️4m/♥ =    4 card ♠ and at least AKQx, AKJx, AQJx or KQJx in m/♥

        If later, after RKC, we bid ♠/m it is asking about the suit length (4 card = negative, 5+ card = positive)

⚠️3NT    =    4 card ♠, 8+ CT    ➤    bidding cue or transfer 

⚠️4♠       =    4 card ♠, 7 CT

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