title: What is the default keybinding for <D> on linux? Mac has this bound to Command
body: <p>Some example settings for Vim (for example <a href="https://github.com/carlhuda/janus" rel="nofollow noreferrer">janus</a>) have the command-key  bound to certain commands. </p>
  
  <p>For example: </p>
  
  <pre><code>  " Command-Shift-F for Ack
    map &lt;D-F&gt; :Ack&lt;space&gt;
  </code></pre>
  
  <p>I don't know how to find out what that <code>D</code> is on my Linux/Ubuntu system. </p>