This textbook includes many features beyond the text materials in each chapter. For example, there is a glossary in the appendices and a list of suggested readings and a list of key terms at the end of each chapter. Throughout each chapter $$Digging Deeper$$ notations highlight additional online information and examples to help deepen your understanding of chapter materials. Skim through the chapters, appendices, and any other supplemental materials required for your course, and identify two special features. For each, explain what it is and how it can help you in understanding taxation in this tax course.