The captions or headlines of the several sections of this Code which are printed in bold type, and the captions or headlines of the several subsections of this Code which are printed in italics or otherwise, are intended as mere catchwords to indicate the contents of the sections and subsections. They are not to be deemed or taken as titles of the sections and subsections, or as any part thereof; and, unless expressly so provided, they shall not be so deemed or taken when any of such sections and subsections, including the captions or headlines, are amended or reenacted.