title: How to specify #define commands for my two different targets
body: <p>I have a project I am splitting into two targets.  The original single-target project uses a number of define commands, however I need these values to now be different depending on which target I am building.</p>
  
  <p>What's the correct way to do that?  Should I be using NStrings declared on the AppDelegate?  Or can I use a #if statement when settings the #defines?</p>
  
  <p>Any help, much appreciated. </p>