title: What is the meaning of the "/" slash in such as the directive “allow from 000.111.222.333/444” in a .htaccess file?
body: <p>For example, I have these directives in my <em>.htaccess</em> file:</p>
  
  <pre><code>&lt;Limit GET HEAD POST&gt;
  order deny,allow
  allow from 1.37.0.0/16
  allow from 23.226.128.240/31
  allow from 23.234.68.64/27
  allow from 23.234.80.200/29
  allow from 23.234.91.160/27
  deny from all
  &lt;/Limit&gt;
  </code></pre>
  
  <ul>
  <li>What is the meaning of the <em>"/"</em> slashes therein?</li>
  <li>And how can we convert them into <code>mod_rewrite</code> directives?</li>
  </ul>