§ 81. Titles and head notes. If the title of any article or other
division of a statute, or the head note of a section shall be amended or
repealed in the body of the statute, or if a new article or other
division having a title, or a new section having a new head note be
added to a statute, the corresponding title or head note, if any, in an
abstract of contents at the beginning of the statute, article or other
division of the statute shall be deemed to be correspondingly amended or
repealed, although there be no express reference thereto.