There are key differences between an appeal and a revision under the law. An appeal is a right created by law that allows parties to challenge a judgment or final order in a higher court and raise questions of law and fact. A revision is a duty imposed on courts where a superior court can examine the proceedings of a subordinate court on a question of law. While multiple appeals are possible, only one revision can be filed. An appeal requires a memorandum to be submitted by the appellant, while a revision can be initiated by the court itself.