This document is a guide that outlines the features and benefits of Relativity aiR for Review, an advanced AI tool designed to enhance the efficiency of legal document reviews. It describes how aiR for Review integrates generative AI to analyze documents quickly and accurately, helping legal teams identify relevant information and key issues. The guide details several functionalities, including the ability to conduct first-pass reviews, prioritize important documents, and improve quality control processes. It emphasizes the tool's capability to provide essential insights at the beginning of a case, establish case expertise rapidly, and facilitate team collaboration by preventing knowledge gaps. Additionally, the document explains how aiR for Review ensures quality and consistency throughout the review process by comparing coding decisions across documents. Overall, it presents a comprehensive understanding of how this tool can streamline legal document review and improve outcomes for legal teams.