GSA: Exclude multiple files using as_filetype
<p>I need to exclude multiple file types(<code>ppt,pdf,doc</code>) from my results
I have prepared URL parameter</p>

<pre><code>&amp;as_filetype=pdf,ppt$&amp;as_ft=e
</code></pre>

<p>This is not working. Also if I want to exclude files like ppt, pptx, pptm is <code>ppt$</code> correct?</p>