This document discusses the key principles of effective communication. It defines communication as the process of sending and receiving information without distortion. It then explains that the 7Cs - completeness, conciseness, consideration, concreteness, clarity, courtesy, and correctness - make communication more effective, understandable, and responsive. Each of the 7Cs is then defined in one or two sentences. For example, completeness means providing complete information to the message receiver, conciseness is conveying the message in as few words as possible, and clarity is making sure everything is easy to understand for the receiver.