�?signal attitude with your first card,

 �?signal preference with your second card.

 

Does it mean the 2nd time anyone else leads the suit or just the 2nd time partner leads the suit that I signal preference?

 

Say partner leads diamonds 1st, declarer wins then decides to play on diamonds a few rounds later, do I signal preference on that round? Or do I signal count?

Or does it mean I have to wait until partner gets the lead and plays another round of diamonds before signalling preference?