At the beginning of a markup, committee members often make opening statements, usually not exceeding five minutes apiece.
The first reading of the text of the bill to be marked up can be waived, either by unanimous consent or by adopting a non-debatable motion.
Also by unanimous consent, the committee may consider the entire bill as having been read and open to amendment at any point.
However, the committee can only close debate, not order the previous question, on individual sections (titles, chapters) of the bill.
State governments and various kinds of municipalities also markup legislation and the process varies by locality.