No ordinance shall contain more than one subject, which shall be clearly expressed in its title. The enacting clause shall be, "Be it ordained by the Council of the City of Trotwood, State of Ohio." Any ordinance which repeals an existing ordinance or ordinances in total need only refer to the title, adopting date and number of said ordinance or ordinances being repealed and any ordinance which amends an existing ordinance or ordinances or part of the Municipal Code, shall set out in full the sections or subsections to be amended, and shall indicate matter to be omitted by enclosing it in brackets or by strikethrough type and shall indicate new matter by underscoring or by italics. (Amended 1971)