BS - 2D data processing program. BS is a windows version of the 2D X-ray data processing program BSL in use at the Daresbury Synchrotron radiation source, for the treatment of low angle diffraction data. ... It requires less memory, has separate window to see 1D graphics and allows export of the image in two common formats: BMP and TIFF. ... information about the data file .adc . add a constant to selected range in n frames from file .add . weighted addition of two images .arg . ...