rs block allows variables to be
defined in terms of data and parameters that may be used later and
will be saved. The model block is where the log probability function
is defined. The generated quantities block allows derived quantities
based on parameters, data, and optionally (pseudo) random number
generation.</p>
<div id="optionality-and-ordering" class="section level3">
<h3 class="unnumbered" number="">Optionality and Ordering</h3>
<p>All of the blocks are optional. A consequence of this is that the
emp