uts</a> for a discussion of scaling parameters.</p>
<p>For example, consider the following program.</p>
<pre><code>parameters {
  real x;
  real y;
}
model {
  x ~ normal(-100, 100);
  y ~ normal(0, 1);
}</code></pre>
<p>The constants <code>-100</code> and <code>100</code> suggest that <code>x</code> is not unit scaled.</p>
<p>Pedantic mode produces the following warning.</p>
<pre><code>Warning at &#39;constants-warn.stan&#39;, line 6, column 14 to column 17:
  Argument -100 suggests there may be parameters