 All justices must indicate their concurrence in the opinion by signing it, and all justices disagreeing with the majority's decision must indicate this in a written dissent.Opinions of the Montana Supreme Court are assigned a "public domain" or "neutral-format" case citation, which consists of the year of decision, the state’s postal abbreviation, and finally a sequential number; the court’s sixth decision handed down during 2006, for example, would have the citation 2006 MT 6.The citations of decisions that have been designated as not for publication are followed by an "N" (e.g., 2006 MT 6N), to indicate that those decisions should not be cited for precedential value in any court.