List lists the files matching the displayed filename filter. Map File shows the currently selected input map file. If it exists, then it is used to determine the protein and solvent regions of the unit cell. Only, or Solvent Points Full Scale. Histogram specifies the filename of an .edh file to save the histogram information.
Number specifies the position of the histogram to be saved or loaded.
Load loads a histogram file at the position in the Number field. Save Histogram saves the histogram indicated by the number field into the filename. Save Graph saves all the histograms into one file. Clear allows you to clear the graph canvas. A list of histograms that can be selected.