| 摘要 |
PROBLEM TO BE SOLVED: To recognizably display a page number of a page belonging to a book file. SOLUTION: When opening the book file, its structure is displayed in a tree part 1101, and an image of each the page is displayed in a preview part 1102. When each the page image in the preview part 1102 is an image of a document page, the page number is added to a lower part of the page image. A sheet number is added to an upper part of a sheet appeared with the document page. |
