title: Which one is the "opt" key in NetBeans?
body: <p>I just installed <a href="http://plugins.netbeans.org/plugin/73175/foldfunctions" rel="nofollow noreferrer">FoldFunctions</a> into NetBeans (8.2). The introduction says to</p>
  
  <blockquote>
    <p>fold/unfold using cmd+opt+O </p>
  </blockquote>
  
  <p>I guess that <code>cmd</code> is the <code>Ctrl</code> key; but if it is, neither the Windows key nor <code>Alt</code> or <code>Shift</code> are the <code>opt</code> key. (Windows 10). Actually I could neither find anything on the net nor any combination of <code>Ctrl</code>, <code>Win</code>, <code>Alt</code>, <code>Shift</code> that works.</p>
  
  <p>So: which is the <code>cmd</code> and which is the <code>opt</code> key?</p>