Patent ID: 8914719

Claim:
An apparatus for editing a document containing a plurality of pages, each of the plurality of pages including one or more first objects, the apparatus comprising: a processor that adds a second object to each of the plurality of pages and determines for each of the plurality of pages, whether the respective page is an improper page by determining whether a state of content on each of the plurality of pages corresponds to any of a plurality of causes due to which the second object is not added properly; a display that displays, for each of the plurality of causes, a quantity of improper pages thus determined; an input unit that receives input to exclude, from the improper pages, a selected page corresponding to a cause selected by a user; and an informing portion that informs the user of a to-be-confirmed page that corresponds to the improper pages remaining after excluding the selected page, wherein if a page is determined to be an improper page due to more than one cause of the plurality of causes, the improper page is attributed to a cause based on a ratio of an overlap of an area of the second object and an area of one of the first objects on the improper page.