Section 854.01. Definitions.

  In this chapter:

(1)  “Extrinsic evidence" means evidence that would be inadmissible under the common law parole evidence rule or a similar doctrine because the evidence is not contained in the governing instrument to which it relates.

(2)  “Governing instrument" means a will; a deed; a trust instrument; an insurance or annuity policy; a contract; a pension, profit-sharing, retirement, or similar benefit plan; a marital property agreement under s. 766.58 (3) (f) ; a beneficiary designation under s. 40.02 (8) (a) ; an instrument under ch. 705 ; an instrument that creates or exercises a power of appointment; or any other dispositive, appointive, or nominative instrument that transfers property at death.

(3)  “Revocable," with respect to a disposition, provision, or nomination, means one under which the decedent, at the time referred to, was alone empowered, by law or under the governing instrument, to change or revoke, regardless of whether the decedent was then empowered to designate himself or herself in place of a former designee, and regardless of whether the decedent then had the capacity to exercise the power.