f interest.</li>
<li><code>log_prob</code> - compute the log probability and gradient of the model for one set of parameters.</li>
<li><code>diagnose</code> - compute and compare sampler gradient calculations to finite differences.</li>
</ul></li>
<li><p><code>data</code> - specifies the input data file, if any.</p></li>
<li><p><code>output</code> - specifies program outputs, both disk files and terminal window outputs.</p></li>
<li><p><code>init</code> - specifies initial values for the model parameters, i