| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate article retrieval while improving visibility for the list of article identification information by storing information specifying the time point of contributing an article, and displaying only the identification information of the article contributed before a prescribed designated time point. SOLUTION: When a restoration designating part 1 receives the designation of a restoration date from a user, a display state calculating part 2 calculates the difference from a sticking date and successively stores the calculated results into a calculated result storage part 4. Next, when the calculation is completed to all article information 31, a display state updating part 5 successively acquires an article number and the value of the difference from the sticking date while referring to the calculated result storage part 4. When the value of the difference from the sticking date is plus, the updating part 5 updates the display state of article information 31 into 'non- display' but when that value is minus or zero, this state is updated into 'display'. When data in the calculated result storage part 4 are eliminated, while referring to an article information storage part 3, a redisplay part 6 does not display the identification information of the article contributed after the designated restoration date but displays only the identification information of the article contributed before the restoration date again.</p> |
