| http://www.w3.org/ns/prov#value | - When the user clicks on the ???DESIGN SITE??? button in FIG. 12A with a mouse, an initial display image is displayed in which apices respectively representing four corners of a site are displayed and the adjacent apices are linked with a red line, as shown in, e.g., FIG. 11C. When the user drags, e.g., the upper right corner (apex) with a mouse to such a state as shown in FIG. 12B, a site of a non
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