| 摘要 |
PROBLEM TO BE SOLVED: To display a document to be read by a user, together with information from the other users reading other documents relating to the document. SOLUTION: A user terminal 110, a document server 130 and a document information management server 120 are connected to a computer network 100. The user terminal transmits a read document identifier that identifies existing position of the read document to the document server and receives the read document from the document server for displaying. The document information management server manages, per user terminal, the read document identifier of the document read by the user and the relating document identifier that identifies existing position of the relating document relating to the read document, and transmits information of the other users reading the relating documents relating to the document read by the user to the user terminal. COPYRIGHT: (C)2004,JPO
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