The document discusses key principles of effective communication, including ensuring messages are complete, concise, considerate of the audience, clear, concrete, courteous, and correct. It emphasizes conveying all necessary facts and details while using the fewest words possible. Effective communication considers the audience's perspective and respects their feelings, background and education level. Messages should be specific, unambiguous, supported by facts, and show respect for the recipient while maintaining objectivity. Proper grammar and precise language and details help ensure the accuracy and credibility of the communication.