h M=0 terms.
<li>If the tumbling paramagnetic molecules is cylindrically symmetric, use a potential with K=0 terms only.
</ul>

<p>
<code>chili</code> simulation performance varies greatly with the type of potential. The simulations are fastest if all potential terms have M=K=0, they are fast if all terms are M=0 or if all terms are K=0, and they are very slow if any term has both M and K different from zero.
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<p>
For concentrated solutions, it is possible to include Heisenberg exchange:
</p>

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