The clerk of court shall keep a record for each ward or protected person involved in any document that may be filed with the court under this chapter, including petitions, requests, and any orders or responses by the court relating thereto, and establish and maintain a system for indexing, filing, or recording which is sufficient to enable users of the records to obtain adequate information. Upon payment of the required fees, the clerk shall issue certified copies of any letters issued to any guardian or conservator or of any other document filed or recorded. Certificates relating to letters must show the date of appointment.