title: Why is "Show page source" not available in (my) WebKit?
body: <p>I've downloaded v. 537.6+ of WebKit for Mac OS, and am running it on 10.8.  (No programming here, just being a web developer looking for the WebKit web inspector.)  Everything's fine, except the "Show page source" option in the Develop menu is grayed out when I'm on even the most, and I can't find any way to enable it.   I"m very puzzled -- is there something else I need to do to get it enabled?  Is there something else going on?  Is this how it's supposed to be?</p>
  
  <h3>Developer Menu</h3>
  
  <p><img src="https://i.stack.imgur.com/7HsqK.png" alt="enter image description here"></p>
  
  <h3>The contextual menu:</h3>
  
  <p><img src="https://i.stack.imgur.com/FU8HW.png" alt="enter image description here"></p>