This document discusses exemplification/illustration as an expository writing strategy. It defines exemplification as using an item or incident that represents a rule or abstraction. The document lists four reasons to use examples in writing: to persuade, explain, or engage the reader. Examples validate arguments, clarify meanings, eliminate ambiguity, and make writing more interesting. The document provides guidelines for examples, such as being relevant, meaningful, accurate, representative, specific, and sufficient. It also classifies examples by length/development and by source.