def _init(self):
        '''
        Prepare the Text for modification notification.
        '''

        # Clear the modified flag, as a side effect this also gives the
        # instance a _resetting_modified_flag attribute.
        self.clearModifiedFlag()

        # Bind the <<Modified>> virtual event to the internal callback.
        self.bind_all('<<Modified>>', self._beenModified)

        Prepare the Text for modification notification.
        
recipes/Python/464635_Call_Callback_when_TkinterText/recipe-464635.py