Designed with EdrawMax, this template depicts the user interaction flow in a library system. A user can either “Sign in” or “Log In” to access the system. Once logged in, they can perform several actions such as “Search for Book,” “Show sales,” or “Chat.” If the user searches for a book and decides to purchase, they can proceed to “Buy a Book” and then “confirm” the purchase. This diagram is useful for visualizing the information architecture and user - facing functionality of a library system, helping developers and designers understand the user journey and improve the system's usability.