This document discusses expository writing. It begins by defining expository writing as explaining or analyzing information to instruct or enlighten. It then provides an outline covering the history, theory, scope, features, types, and challenges of expository writing. The main features are that expository writing should be informative, clear, focused on the topic, avoid personal views, and present information objectively. Common types include problem-solution, cause-effect, compare-contrast, definition-classification, and process. Challenges include developing creativity and avoiding literalness. Solutions include taking online or traditional writing courses and practicing writing daily while incorporating feedback.