The director of the legislative service commission shall be the codifier of the laws of the state. When an act of a general and permanent nature passed by the general assembly becomes a law and is filed with the secretary of state, such director shall examine the same and if there is no sectional numbering on the act or if such numbering is not in conformity with the Revised Code, the director shall give such section of the act its proper sectional number by designating the proper number or numbers on the left hand margin of the enrolled bill. Such number shall be the official code number of the section. Numbers so assigned shall be published in the session laws and in any publication of the Revised Code. Sections of the Revised Code shall be cited and referred to by such official numbers.