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This scan is tipical STM scan, the output are the xyz files, where the z-value is the tunelling current over the specific xy position. The ICUTT value should be set as the 0 in the “options.inp” file. The XMIN, XMAX and YMIN, YMAX should be set properly. There is necessary to have XMIN, YMIN set at the initial point of scan, XMAX, YMAX could be zero, the STM code fill here the values of the end of unit cell automatically.