PURPOSE: To obtain a document preparing device which presents clearly which page is a position indicated by scroll box presents clearly.

CONSTITUTION: An entry means 1 is used to enter a character and a graph or the like and a document comprising the entered character and graph or the like is displayed on a display means 3. In this case, a predetermined part of the document comprising the character and the graph or the like entered by a window processing section 7 is displayed on the display means 3 and a scroll bar display means 6 displays a scroll bar and a scroll box to a predetermined area of the pattern other than the display area of the document. Furthermore, a full page number detection means 8 checks the page number of the entire document and a page sectioning display means 9 displays the mark used to discriminate a page border for each page by dividing a scroll bar displayed by the scroll bar display means 6 based on the page number of the entire document detected by the full page number detection means 8. Thus, which page is the position of the scroll box indicates is clearly recognized.