This document provides an overview of informal reports, including their formats, functions, patterns, and delivery methods. It discusses the direct and indirect patterns for organizing reports and provides examples of each. The document also covers guidelines for developing informal reports, such as determining the problem and purpose, gathering data, organizing data, and writing and revising drafts. Additionally, it provides tips for various types of informal reports, including information reports, progress reports, justification/recommendation reports, and minutes of meetings.