Patent ID: 8154472

Claim:
A display system comprising: a first display section that displays display data; a second display section that displays partial data of the display data or adjacent document data adjacent to the display data; a position determination section that determines a positional relation between the first display section and the second display section; and a display control section that causes the partial data and the adjacent document data to be selectively displayed to the second display section, according to the positional relation determined by the position determination section, and wherein when the positional relation determined by the position determination section is an overlapping relation which indicates that the second display section is overlapped to the first display section, the display control section performs enlarged display of the partial data to the second display section, and when the first display section is in a positional relation with respect to the second display section, and the first display section is overlapped to the second display section again, the display control section performs enlarged display of a partial data of the enlarged partial data to the first display section.