This document discusses line organization, which is the simplest form of organizational structure. It describes line organization as having authority flowing from the top down in a scalar chain of command. The document outlines two types of line organization: pure line organization, where all individuals at a level perform the same work, and departmental line organization, where activities are divided into departments each led by a manager. Features of line organization include its simplicity, unity of command, and flexibility, though it can lack specialization and adequate communication.