| abstract |
(57) [Problem] To correct pattern data of a designed circuit in a shorter time. A graphic data is grouped by grouping the same graphic data into the same group. In grouping, A figure size, which is the length of two adjacent sides of a rectangle inscribed by the figure, is obtained and added to the figure data. If the type, layer, and size of the figure are the same, the same group name is given and added to the figure data. When the selected graphic data is corrected, other graphic data in the same group as the graphic data are automatically corrected. |