dt></dl></div><p>
   <code class="command">ecpg</code> can be run in a so-called <em class="firstterm">Informix compatibility mode</em>. If
   this mode is active, it tries to behave as if it were the <span class="productname">Informix</span>
   precompiler for <span class="productname">Informix</span> E/SQL. Generally spoken this will allow you to use
   the dollar sign instead of the <code class="literal">EXEC SQL</code> primitive to introduce
   embedded SQL commands:
</p><pre class="programlisting">
$in