43. Written proceedings. All written proceedings shall be legibly written on one side of a good quality sheet of paper measuring 21.5 × 35.5 cm; the nature and object of the proceeding, the amount in dispute, the record number, the names of the parties and the name, address, postal code, telephone number, fax number and computer code of the attorney of the party filing the proceeding shall be indicated on the backing.
If a party is not represented by an attorney, the attorney’s computer code and fax number are not required.