docs: def set_title(self, title = None):
          """This method is used to change an entry title.
  
          A new title string is needed.
  
          """
  
          if title is None or type(title) is not str:
              raise KPError("Need a new title.")
          else:
              self.title = title
              self.last_mod = datetime.now().replace(microsecond=0)
              return True