This document provides information and guidelines about copyreading and writing headlines. It defines copyreading as editing written work to correct errors and improve quality. A copyreader checks facts, grammar, structure, opinionated statements, redundant words, and more. The document outlines responsibilities of a copyreader and standard copyediting symbols. It also discusses headline writing, including functions, structures, and rules like using short headlines and active voice. Unit counting guidelines are provided for properly fitting headlines.