The clerk-treasurer shall write on the indices page of each chapter of this code, if any part therein has been amended or repealed, as the case may be, the words “amended” or “repealed” with a reference to the section number where the amending or repealing ordinance can be found. When such amending or repealing shall change the subject matter, such notation should be made in the index at the appropriate place or places. It shall be unlawful for any other person, without authority from the mayor and council, to make any alterations, erasures, changes or interlineations in the ordinance books or minute books. (Prior code 1-3-71)