1. A digital document editing method comprising: an editing area display step of displaying image data to be positioned in a page of a digital document, in an editing area; an image selecting step of selecting one or more image data from the image data displayed in the editing area; a deletion instructing step of instructing a deletion of selected image data from the page; and a display control step of executing a display control, in response to the deletion instruction, to display the selected image data in an evacuation area and not to display in the editing area.