Henry M. Robert, Robert's Rules of Order
“ In large assemblies it is better to follow the practice of the House of Representatives, and go into committee of the whole.] While acting informally upon any resolutions, the assembly can only amend and adopt them, and without further motion the Chairman announces that “the assembly acting informally [or as in committee of the whole] has had such a subject under consideration, and has made certain amendments, which he will report.” The subject comes before the assembly then as if reported by a committee. ”
