docs: def _remove_texttuple(self, pos):
          """Remove a texttuple from the value in the plotter
  
          Parameters
          ----------
          pos: tuple (x, y, cs)
              x and y are the x- and y-positions and cs the coordinate system"""
          for i, (old_x, old_y, s, old_cs, d) in enumerate(self.value):
              if (old_x, old_y, old_cs) == pos:
                  self.value.pop(i)
                  return
          raise ValueError("{0} not found!".format(pos))