2. The apparatus according to claim 1 , further comprising: a determining unit that determines whether or not a change beyond a specific criterion has occurred in the text in the range specified by the range specifying operation received by the operation receiving unit, wherein based on the determining unit determining that a change beyond the specific criterion has occurred in the range of the text, the editing processing unit causes the display control unit to display on the display device the specific text stored in the storing unit.
2. The apparatus according to claim 1 , further comprising: a determining unit that determines whether or not a change beyond a specific criterion has occurred in the text in the range specified by the range specifying operation received by the operation receiving unit, wherein based on the determining unit determining that a change beyond the specific criterion has occurred in the range of the text, the editing processing unit causes the display control unit to display on the display device the specific text stored in the storing unit. 4. The apparatus according to claim 2 , wherein the determining unit periodically acquires from the display control unit positional information on a cursor used in a range specifying operation, in accordance with progress of the range specifying operation, and determines, based on, after the cursor is at a display position on a same row of the text displayed on the display device for a certain time or more, the cursor is moved to a display position in a different row, that a change beyond a specific criterion has occurred in the specified range of text.