docs: def write_feedback(self, feedback, cr=True):
  		""" Store feedback. Keep specified feedback as previous output
  
  		:param feedback: data to store
  		:param cr: whether to write carriage return to the end or not
  		:return: None
  		"""
  		self.__previous_data += feedback
  		if cr is True:
  			self.__previous_data += '\n'