Massachusetts General Laws Part III. Courts, Judicial Officers and Proceedings in Civil Cases (Ch. 211-262) Ch. 211A, § 9

In the determination of causes, all decisions of the appeals court shall be given in writing, except as otherwise provided herein, and the grounds for each decision shall be stated and filed in the cause in which rendered. The court may, in appropriate cases, enter a proper order, direction, judgment or decree for the further disposition of a case without stating the reasons therefor, or may cause a rescript containing a brief statement of the grounds and reasons for the decision, to be filed therein. Opinions and rescripts of the appeals court shall be published by the reporter of decisions.