Hi folks! What is your favorite approach to/agreements on the meaning of a double of 4M opening (penalties, take-out, something else)? Could you please describe your approach in the following cases - what should the double mean/show and what kind of a hand should your partner have to pass/pull? i) 4♠ - P - P - ? ii) P - 4♠ - ? iii) P - P - 4♠ - ? Do vulnerabilities have effect on your definitions of the double? And finally - what if the preempt is 4♥? BR, Mika