The document outlines a three-step process for effective business writing: 1. Planning the message by defining the purpose, developing an audience profile, and adapting the message for the audience. 2. Writing the message by organizing it in a coherent manner and composing it with the appropriate tone, word choice, and sentence/paragraph structure. 3. Completing the message by revising it to evaluate content, organization, style, and tone, and to review for readability, clarity, and conciseness.