title: what is the '-' (minus sign) for RewriteRule?
body: <p>I have that rule in the .htaccess.</p>
  
  <pre><code>RewriteRule ^(.+)\.([0-9a-zA-Z]+)$ - [L,NC]
  </code></pre>
  
  <p>I don"t understand what is the "-" (the minus sign) for, just begin the [L,NC]  </p>
  
  <p>$ <strong>-</strong> [L,NC]</p>