Missouri Revised Statutes Title XXXV. Civil Procedure and Limitations § 512.150. Rules for filing briefs, transcripts, and docketing cases

1. All briefs shall be prepared as provided by rule of the appellate court. The appellate courts shall have power to prescribe the number of copies which shall be filed; the time within which briefs shall be filed and the manner in which transcripts on appeal, briefs, and other documents shall be served upon the opposite party or otherwise made available to him; the time and manner in which appeals shall be docketed and set for argument; and rules for the taxation of the costs of preparing transcripts on appeal. Any appellate court may suspend or modify the rules made in pursuance of this section in a particular case upon a showing that justice requires a suspension or modification, and shall do so especially when a litigant is a poor person and the general rules require a burdensome expenditure of money.

2. Any rules made by an appellate court under subsection 1 with relation to the docketing of cases and setting the same for argument shall prevail over any statutory provision prescribing the order of hearings or preferences to be given in certain classes of cases.