.3.2.6 Torsion and nonmetricity</a></td></tr>
<tr><td></td><td valign="top"><a href="maxima_42.html#IDX1968">contour</a></td><td valign="top"><a href="maxima_42.html#SEC258">42.2.3 Graphics options</a></td></tr>
<tr><td></td><td valign="top"><a href="maxima_42.html#IDX1969">contour_levels</a></td><td valign="top"><a href="maxima_42.html#SEC258">42.2.3 Graphics options</a></td></tr>
<tr><td></td><td valign="top"><a href="maxima_12.html#IDX496"><code>contour_plot</code></a></td><td valign="top"><a href="maxim