title: Is there any difference - Delphi Uses Unit After Interface or Implementation?
body: <p>If a unit can be placed after interface section or implementation, is there a difference in terms of code-performance? which one is preferred?</p>
  
  <p>For example,</p>
  
  <pre><code>unit Example;
  
  interface 
  
  uses
    UnitA;  // preferred here?
  
  implementation
  
  uses
    UnitA;  // or here?
  
  end.
  </code></pre>