(Tourists can read the homepage of the website, but they need to register as members to read or rent e-books for free. Members need to input their account and password information to log in. Each member's account will be corresponding to their own information, such as their email address, etc. Different member levels will have different treatment when renting books. Login as an administrator also requires entering an account and password, which can manage member information, add announcements, manage message boards, etc. The administrator has the highest authority in the system.)
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