title: What is the XCode Interface Builder "Document" Section
body: <p>I understand the "Xcode Specific Label" section.</p>
  
  <p>What I <strong>don't</strong> understand is the "Notes" section.  I've played around with it and can't see any discernable effect.</p>
  
  <p><em>Can anyone explain this?</em></p>
  
  <p><img src="https://i.stack.imgur.com/rQ1Iw.png" alt="enter image description here"></p>