swipl: how to reload file
<p>First I load the file with <code>SWI-Prolog</code></p>

<pre><code>$ swipl file.pl
</code></pre>

<p>then I modify the file and save.</p>

<p>Now how do I reload the file like</p>

<pre><code>?- reload
</code></pre>

<p>for this modified <code>file.pl</code>?</p>