title: Convert NSRange contents to NSString?
body: <p>I am working on a Cocoa Mac OSX app, and I am wondering if it is possible to present the contents of an <code>NSRange</code> found by:</p>
  
  <pre><code>NSRange range;
  range.location = 4;
  range.length = 4;
  </code></pre>
  
  <p>as an <code>NSString</code>?</p>
  
  <p><em>e.g.</em> in the example above, if I had a string with contents <strong>"abcdefgh"</strong>, presenting the contents of the above range as a string would give <strong>"efgh"</strong>. Is this possible?</p>