This document outlines the seven principles of effective writing: appropriating content to the audience, focus and unity, organization, development, sentence structure, diction and word usage, and mechanics. It defines each principle and provides examples and guidelines for how to apply each one to improve writing. The principles emphasize clearly establishing content for the intended readers, maintaining a clear central topic within and across paragraphs, using a logical structure, developing ideas in a complete manner, constructing varied and correct sentences, choosing precise wording, and properly applying writing conventions.