 class="code"><span class="constructor">Format</span></code></a> module (or, if you need to use functions from <a href="Printf.html"><code class="code"><span class="constructor">Printf</span></code></a>, banish
    or carefully double check the format strings that contain <code class="code"><span class="string">'@'</span></code>
    characters).</li>
</ul>
<h3 id="2_Exceptionsduringscanning">Exceptions during scanning</h3><p>Scanners may raise the following exceptions when the input cannot be read
    accor