A computer program and apparatus for display control, which are capable of allowing a user to easily know the positional relationships among a plurality of display devices in the case where he/she uses the plurality of display devices to display content. An area information memory stores information on the display areas of display devices. An identification information memory stores a plurality of identification information. When information including the number of display devices to be used and content to be displayed is entered, a creating unit creates display data so as to match an entire usable display area. A dividing unit divides the display data into a plurality of partial display data according to the display areas of the display devices, and adds identification information to sides that are adjacent to other partial display data, out of the sides of the plurality of partial display data. An output unit outputs the obtained partial display data to the display devices.