One authorized by a principal to perform any and all acts associated with the continued operation of a particular job or certain business of the principal is a general agent. The words "particular job or certain business" are words that pertain to general agency. A universal agent is authorized by a principal to perform any and all business for the principal, with or without regard to a particular job; and without regard to whether the business is certain or uncertain. A special agent is authorized to perform only acts associated with one transaction. The special agency is concluded when the transaction is concluded.