A "Vade Mecum" is a Latin term meaning "go with me." It refers to a handbook or guide that is portable and easy to carry. Traditionally, it contains essential information or instructions that one might need frequently, making it a practical tool for students, professionals, or anyone seeking quick reference. These guides can cover various subjects, from law and medicine to travel and cooking. The format can vary, including pocket-sized books or digital applications, but the primary purpose remains the same: to provide concise, accessible information that users can refer to on the go.