This excerpt taken from the BXC DEF 14A filed Apr 16, 2008.
Article 15. Beneficiary Designation
Each Participant under this Plan may, from time to time, name any beneficiary or beneficiaries (who may be named contingently or successively) to whom any benefit under this Plan is to be paid in case of his death before he receives any or all of such benefit. Each such designation shall revoke all prior designations by the same Participant, shall be in a form prescribed by the Committee, and will be effective only when filed by the Participant in writing with the Company during the Participants lifetime. In the absence of any such beneficiary designation, benefits remaining unpaid or rights remaining unexercised at the Participants death shall be paid to or exercised by the Participants executor, administrator, or legal representative.