(a)Filing by Relator Required. Relator must file with the petition: (1) a certified or sworn copy of every document that is material to the relator's claim for relief and that was filed in any underlying proceeding; and(2) a properly authenticated transcript of any relevant testimony from any underlying proceeding, including any exhibits offered in evidence, or a statement that no testimony was adduced in connection with the matter complained.(b)Supplementation Permitted. After the record is filed, relator or any other party to the proceeding may file additional materials for inclusion in the record.(c)Service of Record on All Parties. Relator and any party who files materials for inclusion in the record must - at the same time - serve on each party: (1) those materials not previously served on that party as part of the record in another original appellate proceeding in the same or another court; and(2) an index listing the materials filed and describing them in sufficient detail to identify them.