old_contents: 
  
  from traits.api import *
  from traitsui.api import *#View, Item, ButtonEditor, Group, HSplit, 
  from traitsui.menu import *
  
  import numpy as npy
  import os 
  import pylab as plb
  import skrf as rf
  
  
  
  
  class PlotTool(HasTraits):
      save_dir = Directory()
      clf = Button('Clear')
      newfig = Button('New')
      close_all = Button('Close All')
      tight_layout = Button('Tight Layout')
      draw_show = Button('Draw/Show')
      save_all_figs = Button('Save All')
      plot_format =  Enum('png',['svg','eps','jpg','png'],label='Format')
      title = String('')
      apply_title = Button('Title')
      def _clf_fired(self):
          plb.clf()
          plb.draw()
          plb.show()
      
      def _newfig_fired(self):
          plb.figure()
          plb.draw()
          plb.show()
      
      def _close_all_fired(self):
          plb.close('all')
       
      def _tight_layout_fired(self):
          plb.tight_layout()
          plb.draw()
          plb.show()
      
      def _draw_show_fired(self):
          plb.draw()
          plb.show()    
      
      def _save_all_figs_fired(self):
          rf.save_all_figs(dir=self.save_dir, format = [self.plot_format])
          plb.ion()
      
      def _apply_title_fired(self):
          plb.title(self.title)
          plb.draw();plb.show()
      
      view = View(
          Group(
              HSplit(
                  Item('newfig', label='Figure\t\t'),
                  Item('clf', show_label=False),
                  Item('close_all', show_label=False),
                  Item('tight_layout', show_label=False),
                  Item('draw_show', show_label=False),
                  ),
              HSplit(
                  Item('apply_title', label='Formating\t'),
                  Item('title', show_label=False),
                  ),
              HSplit(
                  Item('save_all_figs', label='Save\t\t'),
                  Item('plot_format'),
                  Item('save_dir', label='Directory'),
                  
                  )
              )
          )
  
new_contents: 
  
  from traits.api import *
  from traitsui.api import *#View, Item, ButtonEditor, Group, HSplit,
  from traitsui.menu import *
  
  import numpy as npy
  import os
  import pylab as plb
  import skrf as rf
  
  
  
  
  class PlotTool(HasTraits):
      save_dir = Directory()
      clf = Button('Clear')
      newfig = Button('New')
      close_all = Button('Close All')
      tight_layout = Button('Tight Layout')
      draw_show = Button('Draw/Show')
      save_all_figs = Button('Save All')
      plot_format =  Enum('png',['svg','eps','jpg','png'],label='Format')
      title = String('')
      apply_title = Button('Title')
      def _clf_fired(self):
          plb.clf()
          plb.draw()
          plb.show()
  
      def _newfig_fired(self):
          plb.figure()
          plb.draw()
          plb.show()
  
      def _close_all_fired(self):
          plb.close('all')
  
      def _tight_layout_fired(self):
          plb.tight_layout()
          plb.draw()
          plb.show()
  
      def _draw_show_fired(self):
          plb.draw()
          plb.show()
  
      def _save_all_figs_fired(self):
          rf.save_all_figs(dir=self.save_dir, format = [self.plot_format])
          plb.ion()
  
      def _apply_title_fired(self):
          plb.title(self.title)
          plb.draw();plb.show()
  
      view = View(
          Group(
              HSplit(
                  Item('newfig', label='Figure\t\t'),
                  Item('clf', show_label=False),
                  Item('close_all', show_label=False),
                  Item('tight_layout', show_label=False),
                  Item('draw_show', show_label=False),
                  ),
              HSplit(
                  Item('apply_title', label='Formating\t'),
                  Item('title', show_label=False),
                  ),
              HSplit(
                  Item('save_all_figs', label='Save\t\t'),
                  Item('plot_format'),
                  Item('save_dir', label='Directory'),
  
                  )
              )
          )
  
subject: Remove trailing whitespace