 <code><a href='ly_curve.html'>ly_curve</a></code>;
  <code><a href='ly_density.html'>ly_density</a></code>; <code><a href='ly_hist.html'>ly_hist</a></code>;
  <code><a href='ly_image_url.html'>ly_image_url</a></code>; <code><a href='ly_image.html'>ly_image</a></code>;
  <code><a href='ly_lines.html'>ly_lines</a></code>; <code><a href='ly_map.html'>ly_map</a></code>;
  <code><a href='ly_multi_line.html'>ly_multi_line</a></code>; <code><a href='ly_oval.html'>ly_oval</a></code>;
  <code><a href='ly_patch.html