The masculine gender, when appearing in the Plan, shall include the feminine gender (and vice versa), and the singular shall include the plural, unless the Plan clearly states to the contrary. Headings and subheadings are for the purpose of reference only and are not to be considered in the construction of the Plan. If any provision of the Plan is determined to be for any reason invalid or unenforceable, the remaining provisions shall continue in full force and effect. All of the provisions of the Plan shall be construed and enforced according to the laws of the State of Illinois without regard to conflict of law principles and shall be administered according to the laws of such state, except as otherwise required by ERISA, the Code, or other Federal law.