ty string is a valid Stan program, although it will trigger a
warning message from the Stan compiler. The Stan program blocks
that occur must occur in the order presented in the skeletal program
above. Within each block, both declarations and statements are
optional, subject to the restriction that the declarations come
before the statements.</p>
</div>
<div id="variable-scope" class="section level3">
<h3 class="unnumbered" number="">Variable Scope</h3>
<p>The variables declared in each block have scope ove