| 摘要 |
When an element is interactively deleted in cooperation with an input device and a display device, if the element is in association with more than one element to provide relations thereamong, other elements, obtained by deleting the element to be deleted from more than one element specified by the relations, are associated each other, and a relation thereamong is displayed. Then, by associating other elements to each other upon deletion of the element, the elements are easily in association with each other, while reflecting intention of a user as much as possible.
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