GrSAS                   Functions to calculate the gamma baseline term
                        for PDF
broadPDF                Analytically broaden the PDF
calcPDF                 Functions to calculate the PDF
calcTotalScatt          Functions to calculate the total scattering
                        structure function
createAtom              Describe fractional coordinates and scattering
                        parameters of the basis atoms
gaussConvol             Gauss convolution
getBase                 Fractional coordinates and scattering
                        parameters for a given chemical element
plotPart                Draws a three-dimensional scatterplot
rss                     Function to calculate the RSS between the
                        simulated PDF or the total scattering structure
                        function and target data
simPart                 Functions to simulate the atomic positions in a
                        nanoparticle
termRip                 Simulate termination ripples
