docs: def main(argString=None):
      """The main function.
  
      The purpose of this module is to plot Eigenvectors provided by the
      Eigensoft software.
  
      Here are the steps of this module:
  
      1. Reads the Eigenvector (:py:func:`read_eigenvalues`).
      2. Plots the Scree Plot (:py:func:`create_scree_plot`).
  
      """
      # Getting and checking the options
      args = parse_args(argString)
      check_args(args)
  
      # Reads the eigenvalues
      eigenvalues = read_eigenvalues(args.evec)
  
      # Creates the plot
      create_scree_plot(eigenvalues, args.out, args)