The program CELSLC is used to calculate object transmission functions aka. phase gratings from atomic structure models. Files describing the atomic structure and other parameters are specified as arguments upon calling. The output is oganized in so-called slice files, which are input for multislice calculations with the program MSA or the Dr. Probe GUI.
The phase gratings generated by CELSLC are saved as a sequence of files with the file-name extension sli. Each slice file corresponds to one slice of the atomic structure model. They contain a header with physical size and calculation parameters and the complex-valued phase gratings in uncompressed binary form. The slice files are input data of multislice calculations with the Dr. Probe GUI or with the command-line program MSA.