| 摘要 |
PROBLEM TO BE SOLVED: To make easily specifiable a part to be masked when a seller allows document data to be browsed, and to provide a customer with sufficient material for judging whether or not to purchase a document. SOLUTION: In a seller terminal or a sales center server, the document data for sale and mask information on the document data are acquired from the document data with a prescribed mark put to a part to be masked, or the document data for sale is acquired, and the mask information on the document data concerned is acquired from the specified attribute. In the sales center server, these are related and stored, and in response to a browse request of the document data for sale, the document data concerned is transmitted after being masked according to the mask information related to the document data concerned. |
