Guarantee
Guarantee means an unconditional obligation of a person other than the issuer of the security to undertake to pay, upon presentment by the holder of the Guarantee (if required), the principal amount of the underlying security plus accrued interest when due or upon default, or, in the case of an Unconditional Demand Feature, an obligation that entitles the holder to receive upon exercise the approximate amortized cost of the underlying security or securities, plus accrued interest, if any. A Guarantee includes a letter of credit, financial guaranty (bond) insurance, and an Unconditional Demand Feature (other than an Unconditional Demand Feature provided by the issuer of the security).