4000. This division may be cited as the Power of Attorney Law. 4001. Sections 4124, 4125, 4126, 4127, 4206, 4304, and 4305 may be cited as the Uniform Durable Power of Attorney Act. 4010. Unless the provision or context otherwise requires, the definitions in this chapter govern the construction of this division. 4014. (a) "Attorney-in-fact" means a person granted authority to act for the principal in a power of attorney, regardless of whether the person is known as an attorney-in-fact or agent, or by some other term. (b) "Attorney-in-fact" includes a successor or alternate attorney-in-fact and a person delegated authority by an attorney-in-fact. 4018. "Durable power of attorney" means a power of attorney that satisfies the requirements for durability provided in Section 4124. 4022. "Power of attorney" means a written instrument, however denominated, that is executed by a natural person having the capacity to contract and that grants authority to an attorney-in-fact. A power of attorney may be durable or nondurable. 4026. "Principal" means a natural person who executes a power of attorney. 4030. "Springing power of attorney" means a power of attorney that by its terms becomes effective at a specified future time or on the occurrence of a specified future event or contingency, including, but not limited to, the subsequent incapacity of the principal. A springing power of attorney may be a durable power of attorney or a nondurable power of attorney. 4034. "Third person" means any person other than the principal or attorney-in-fact.