def METHOD_NAME(self, xy0, xy1):
    """
    Draws a line between the two points. Coordinates are given in
    Postscript point coordinates (72 points per inch, (0, 0) is the lower
    left corner of the page).
    """
    xy = xy0 + xy1
    self._fp_write("%d %d %d %d Vl\n" % xy)