To mgoetze 2 di MULTI is NOT a Brown Sticker. its an exception In WBF System Policy 2002 "The following conventions or treatments are categorised as 'Brown Sticker': a) Any opening bid of two clubs through three spades that: i) could be weak (may by agreement be made with values below average strength) AND ii) does not promise at least four cards in a known suit. EXCEPTION: The bid always shows at least four cards in a known suit if it is weak. If the bid does not show a known four card suit it must show a hand a king or more over average strength. (Explanation: Where all the weak meanings show at least four cards in one known suit, and the strong meanings show a hand with a king or more above average strength, it is not a Brown Sticker Convention.) EXCEPTION: A two level opening bid in a minor showing a weak two in either major, whether with or without the option of strong hand types, as described in the WBF Conventions Booklet." I have no problem with exceptions listed in the rules, but I have problem with Rules that have some hidden rules behind.