| 摘要 |
A main control unit (200) determines whether or not there is the previous version (Version n-1) of the same document serving as a comparison target as a document stored in a session storage unit (202) (S1002). Next, the main control unit (200) determines whether or not there is difference between both objects of the current version and previous version which has been compared (S1011). Subsequently, the main control unit (200) executes the action embedded in the attribute of the object data having difference as to the previous version (S1014). Subsequently, the main control unit (200) stores the object data having difference as to the document stored in the session storage unit (202) in a document information storage unit (401) (S1016). |
