DISPLAY CONTROL APPARATUS, DISPLAY CONTROL METHOD, AND COMPUTER-READABLE STORAGE MEDIUM

An application issues a display request to display a content in an area set on a display device. In response to determining that a different content is displayed in the area, an arbitration is executed to allocate the content to the area to satisfy a rule-based arbitration using a rule definition including (i) an arbitration policy defining a basic arbitration when allocating the content to the area on the display device and (ii) a constraint expression describing a property to be exceptionally satisfied.