Wherever any words are used in the masculine, they shall be construed as though they were used in the feminine in all cases where they would so apply; and wherever any words are use in the singular or the plural, they shall be construed as though they were used in the plural or the singular, as the case may be, in all cases where they would so apply. Titles of articles and sections are for general information only, and the Plan is not to be construed by reference to such items.