div id="language" class="section level1 unnumbered">
<h1><i style="font-size: 110%; color:#990017;">Language</i></h1>
<p>This first part of the reference manual is intended as an informal
specification of the Stan programming language. The language is
responsible for defining a log density function conditioned on data.
Typically, this is a Bayesian posterior, but it may also be a
penalized likelihood function.</p>

</div>
            </section>

          </div>
        </div>
      </div>
<a href="index.ht