code: def turn_physical_off(self):
          
          self._roSet= False
          self._voSet= False
          self._orb.turn_physical_off()
docs: NAME:
  
             turn_physical_off
  
          PURPOSE:
  
             turn off automatic returning of outputs in physical units
  
          INPUT:
  
             (none)
  
          OUTPUT:
  
             (none)
  
          HISTORY:
  
             2014-06-17 - Written - Bovy (IAS)