Make stream commands for butt line end symbol. "lr" denotes left (False) or right point.

def _le_butt(self, annot, p1, p2, lr):
        """Make stream commands for butt line end symbol. "lr" denotes left (False) or right point.
        """
        m, im, L, R, w, scol, fcol, opacity = self._le_annot_parms(annot, p1, p2)
        shift = 3
        d = shift * max(1, w)
        M = R if lr else L
        top = (M + (0, -d/2.)) * im
        bot = (M + (0, d/2.)) * im
        ap = "\nq\n%s%f %f m\n" % (opacity, top.x, top.y)
        ap += "%f %f l\n" % (bot.x, bot.y)
        ap += "%g w\n" % w
        ap += scol + "s\nQ\n"
        return ap