 The rubrics of the titles have the force of law when their sense is complete, as for instance, "Ne sede vacante aliquid innovetur" (Let there be no innovation while the see is vacant), because the headings form an integral part of the official code of the laws.However, they ought always to be interpreted according to the decisions contained in the chapters.The historical indications concerning each chapter are often far from being exact, even since they were corrected in the Roman edition of 1582.