| 摘要 |
PROBLEM TO BE SOLVED: To grasp intention of an editor by reproducing described contents watched by the editor for additionally describing a comment or the like to a document. SOLUTION: A document synthesizing part 11 displays a layer on a screen, a document editing part 10 prepares and adds a novel layer on the basis of user operation to the document composed of the layer displayed on the screen and additional layer display state information related to the layer displayed on the screen at the time of addition is prepared. The additional layer display state information is managed by layer state managing parts 21 and 23 corresponding to the novel layer and when an instruction designating contents added to the document is received from a user by a display receiving part 10, on the basis of the additional layer display state information, a layer state reproducing part 13 displays the layer, which is displayed on the screen when that designated layer is added, on the screen of the document synthesizing means 11. |
