EPL data conversion system
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PATACON-EPL is a software product for converting semiconductor mask CAD data to the EB data of masks for EB steppers. This software has several functions, such as pattern placement corresponding to the structure of masks for EB steppers, complementary division for stencil masks, stitching for deforming the shape of a portion for connecting divided portions, proximity effect correction, machine control data generation, mask inspection data generation, and alignment mark insertion. This software operates in the environment in which several to some hundreds of Linux PC's are connected by a high-speed network.