(a) Any city or town having extended its corporate limits under the provisions of this article or other law may again extend its corporate limits under this article or under any other law authorizing an extension of corporate limits by such city or town.
(b) In every proceeding to extend the corporate limits of any city or town under the provisions of this article, the council of such city or town shall declare in each and every resolution provided for in this article and the probate judge shall declare in each and every order directing and ordering an election to be held under this article, and in every notice given under this article, and in every order made and entered on the records of the probate court under this article, that such resolution, order, or notice, as the case may be, is passed, entered, or given under the provisions of this article.