title: Generic Xcode usage questions
body: <p>I have 3 general questions related to the usage of xCode. Any help would be greatly appreciated please:</p>
  
  <ol>
  <li>Whenever I open documentation, the left content/index column is always small and I have to drag it wider. Is there a way to permanently set its size?</li>
  <li>Is there a way to perform a wildcard search and replace e.g. I have 3 lines:
  var1Letter = @"A";
  var2Letter = @"A";
  var3Letter = @"A";</li>
  </ol>
  
  <p>In the above I would like to replace var?letter in 1 go.</p>
  
  <ol start="3">
  <li>How do I set the default SDK?</li>
  </ol>
  
  <p>Thanks.</p>