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Graphics Interchange Format  |  1998-02-10  |  30.1 KB  |  480x349  |  4-bit (16 colors)
   ocr: Figure4.ASimple Use Case Description System Librarian Borrower Book Date Border NS User asks librarian RSSA Check Can Borrow to check out book 2 out Know if X Borrower checks its ESCR Overdue - status - Compare Book checks its due - Le date against today's" date - - Book checks itself Enter Check Out - - out, and SO on Book ID C