Each proposed directive-change shall be given a number for reference. The numbers shall begin with 301, and each directive-change proposed in the proper way shall receive the next successive integer, whether or not the proposal is adopted.

If a directive is repealed and reenacted, it receives the number of the proposal to reenact it. If a directive is amended or transmuted, it receives the number of the proposal to amend or transmute it. If an amendment is amended or repealed, the entire directive of which it is a part receives the number of the proposal to amend or repeal the amendment.