s comment prefix</h2>
<p><em>Deprecated</em>: The use of <code>#</code> for line-based comments is
deprecated. From the first occurrence of <code>#</code> onward, the rest
of the line is ignored. This happens after includes are resolved
starting with <code>#include</code>.</p>
<p><em>Replacement</em>: Use a pair of forward slashes, <code>//</code>, for line
comments.</p>
<p><em>Scheduled Removal</em>: Stan 2.32</p>
</div>
            </section>

          </div>
        </div>
      </div>
<a href="if_else-