§ 30.23  AMENDMENTS AND SUBSTITUTES.
   The provisions of this section shall apply at all meetings of the City Council.  All amendments shall be considered in the order in which they are moved.  When a proposed amendment is under consideration, a motion to amend the same may be made. No further amendment to such second amendments shall be in order, but when an amendment to an amendment is under consideration a substitute for the whole matter may be received.  No proposition on a subject different from the one under consideration shall be received under color of a substituted.
('84 Code, § 2-16)