docs: def draw_uppercase_key(self, surface, key):
          """Default drawing method for uppercase key. Drawn as character key.
  
          :param surface: Surface background should be drawn in.
          :param key: Target key to be drawn.
          """
          key.value = u'\u21e7' 
          if key.is_activated():
              key.value = u'\u21ea'
          self.draw_character_key(surface, key, True)