old_contents: # create files for chart-02-ols-mean-of-root-mean-squared-errors
  # with these choices
  #  metric     in mean-root-mean-squared-errors
  #  model      in ols
  #  ndays      in 30 60 ... 360
  #  predictors in act actlog ct ctlog
  #  responses  in price logprice
  #  usetax     in yes no
  #  year       in 2008
  # invocations and files created
  #  python chart-02X.py makefile -> src/chart-02X.makefile
  #  python chart-02X.py data     -> data/working/chart-02X.data
  #  python chart-02X.py txt      -> data/working/chart-02X.txt
  #  python chart-02X.py txtY     -> data/working/chart-02X-Y.txt
  
  import sys
  
  
  from Bunch import Bunch
  from chart_02_template import chart
  
  
  def main():
      specs = Bunch(metric='mean-of-root-mean-squared-errors',
                    title='Mean of Root Mean Squared Errors',
                    model='ols',
                    training_periods=['30', '60', '90', '120', '150', '180',
                                      '210', '240', '270', '300', '330', '360'],
                    feature_sets=['act', 'actlog', 'ct', 'ctlog'],
                    responses=['price', 'logprice'],
                    usetax=['yes', 'no'],
                    year='2008')
      chart(specs=specs,
            argv=sys.argv)
  
  
  if __name__ == '__main__':
      main()
  
new_contents: # create files for chart-02-ols-mean-of-root-mean-squared-errors
  # with these choices
  #  metric     in mean-root-mean-squared-errors
  #  model      in ols
  #  ndays      in 30 60 ... 360
  #  predictors in act actlog ct ctlog
  #  responses  in price logprice
  #  usetax     in yes no
  #  year       in 2008
  # invocations and files created
  #  python chart-02X.py makefile -> src/chart-02X.makefile
  #  python chart-02X.py data     -> data/working/chart-02X.data
  #  python chart-02X.py txt      -> data/working/chart-02X.txt
  #  python chart-02X.py txtY     -> data/working/chart-02X-Y.txt
  
  import sys
  
  
  from Bunch import Bunch
  from chart_02_template import chart
  
  
  def main():
      specs = Bunch(metric='mean-of-root-mean-squared-errors',
                    title='Mean of Root Mean Squared Errors',
                    model='ols',
                    training_periods=['30', '60', '90', '120', '150', '180',
                                      '210', '240', '270', '300', '330', '360'],
                    feature_sets=['act', 'actlog', 'ct', 'ctlog'],
                    responses=['price', 'logprice'],
                    year='2008')
      chart(specs=specs,
            argv=sys.argv)
  
  
  if __name__ == '__main__':
      main()
  
subject: remove dead code