1. A display control apparatus comprising: an image display configured to display a document image; an extracting unit configured to extract image portions from the document image, in response to the display control apparatus receiving a pointing operation that points to position where a white portion of the document image, the white portion of the document image is a portion of the document image where a ratio of white pixels to non-white pixels in a specified area centered at the pointed position is greater than or equal to a threshold value; and a display controller configured to control the image display to center and display an image portion among the extracted image portions that is nearest the pointed position.