This document discusses concrete supporting details and how to use them effectively in paragraphs. It defines concrete support as additional factual sentences that strengthen an argument without relying on opinions. Examples, statistics, and quotations are provided as the most common types of concrete support. Guidelines for using examples and statistics are outlined, such as only using personal examples infrequently and citing sources of statistics. The document concludes by emphasizing the importance of concrete supporting details to prove points rather than opinions.