PROBLEM TO BE SOLVED: To provide a pattern design support device capable of displaying at least two windows, reading area information of data displayed in one window into the other window, and displaying the corresponding areas in both windows.;SOLUTION: In a window system capable of displaying at least two windows (W1 and W2) having a hierarchical structure on a display screen, the area information RI (W1) of the pattern data DT1 displayed in one window W1 is stored in an information storage area PP on the root window RW, and the area information RI (W1) of the pattern data DT1 displayed in one window W1 is read into the other window W2 from the information storage area PP. Then, the pattern data DT2 in the area corresponding to the pattern data DT1 displayed in one window W1 can be displayed thereby in the other window W2 in the pattern design support device.;COPYRIGHT: (C)2003,JPO
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