| 摘要 |
PROBLEM TO BE SOLVED: To group a document and a plurality of documents derived from the document.SOLUTION: A control part (4) generates a new document based on an existing document and sets the generated new document as a document belonging to the same document group as the generating source document. Specifically, when the generating source document belongs to neither of document groups, the control part (4) creates a new document group to which the generating source document and the new document belong; when the generating source document belongs to any one of document groups, the control part (4) adds the new document to the document group to which the generating source document belongs. |
