title: Universal character name error in NSString when using unicode character, <
body: <p>I'd like to use the Unicode version of '&lt;' in an NSString but the compiler produces the error:</p>
  
  <pre><code>"Character '&lt;' cannot be specified by a universal character name"
  </code></pre>
  
  <p>when I use:</p>
  
  <pre><code>NSString *text = @"Some Text: \u003C"; 
  </code></pre>
  
  <p>'&lt;' seems to be a special character, as well as "=" and a few others so what's a way to insert a literal '&lt;' inside the string, without literally using <code>'&lt;'</code> like so: <code>"some string &lt;"</code>?</p>
  
  <p>I don't have control over the string value itself and the above value as in-line is for demonstration purpose.</p>