t><span class="samp">--help</span><dd><a name="index-_002dh-19"></a><a name="index-_002d_002dhelp-20"></a><a name="index-print-usage-message-21"></a>Print a short usage message.

     <dt><span class="samp">--version</span><dd><a name="index-_002d_002dversion-22"></a><a name="index-print-version-23"></a>Print the version.

</dl>

<h3 class="section">2.1 Environment Variables</h3>

<p>Diction's behaviour is affected by the following environment variables. 
<a name="index-environment-variables-24"></a>
     <