title: Initialization command
body: <p>I noticed in the <code>Cell &gt; Cell properties</code> menu an item I assume was recently added, but I really wouldn't know for sure (8.0.4/Win here). It's called <code>Initialization Command</code>:</p>
  
  <p><img src="https://i.stack.imgur.com/vqDo2.png" alt="enter image description here"></p>
  
  <p>Nothing about it to be found in my documentation center. Neither does it seem to be in the <a href="http://reference.wolfram.com/mathematica/howto/WorkWithInitializationCells.html" rel="noreferrer">online reference</a>:</p>
  
  <p><img src="https://i.stack.imgur.com/nO5Dw.gif" alt="enter image description here"></p>
  
  <p>Any idea what this is supposed to do? As far as I can see its effect is the same as the Initialization Cell menu item.</p>