The document discusses the 7 C's of communication that are important for effective business communication: completeness, conciseness, consideration, clarity, concreteness, courtesy, and correctness. It provides guidelines and examples for each C, such as including all necessary information for completeness, eliminating unnecessary words for conciseness, focusing on the reader's perspective in a tactful manner for consideration, using simple language for clarity, being specific rather than vague for concreteness, avoiding expressions that could offend for courtesy, and maintaining proper grammar and accuracy for correctness. Mastering these 7 C's can help create effective and appropriate business messages.