title: What are "targets" in Xcode?
body: <p>I have seen a lot of things about 'targets' while working with xcode. when i click on the project icon (blue, in xcode 4.2) i see 'Targets' in the middle pane with my file name under it.</p>
  
  <p>What does that mean? and can I add more 'targets' to my project? If yes, what would that mean?</p>
  
  <p>I have this:
  <a href="http://developer.apple.com/library/ios/#featuredarticles/XcodeConcepts/Concept-Targets.html">http://developer.apple.com/library/ios/#featuredarticles/XcodeConcepts/Concept-Targets.html</a></p>
  
  <p>but i didn't understand a thing</p>