Neb. Rev. Stat. § 76-105: Neb. Rev. Stat. § 76-105

An otherwise effective exercise of power of appointment, a power of sale or a power of revocation, whether inter vivos or by a testamentary disposition, transfers or revokes the entire interest which the holder thereof has the power to transfer or to revoke unless an intent to transfer or to revoke a less interest is effectively manifested.