Compendia are comprehensive collections of information or summaries that provide an overview of a specific subject. They are often used in academic, scientific, or professional contexts to compile essential data, research findings, or guidelines in a concise format. This makes it easier for readers to access and understand complex topics without having to sift through extensive materials. In the field of medicine, for example, compendia may include drug information, treatment protocols, or clinical guidelines. They serve as valuable resources for healthcare professionals, researchers, and students, helping them stay informed and make evidence-based decisions in their work.