/td><td width="300">plot homogeneous line</td></tr>
<tr><td width="150"><a href="html/plot_point.html">plot_point</a></td><td width="300">plot points</td></tr>
<tr><td width="150"><a href="html/plot_poly.html">plot_poly</a></td><td width="300">plot polygon</td></tr>
<tr><td width="150"><a href="html/plot_sphere.html">plot_sphere</a></td><td width="300">draw a sphere</td></tr>
<tr><td width="150"><a href="html/plot_vehicle.html">plot_vehicle</a></td><td width="300">plot vehicle</td></tr>
<tr><td width="150">