title: understanding $ vs. jQuery in iife instead of $
body: <p>I am trying to understand if there is any difference between:</p>
  
  <pre><code>(function($){
  
  ...
  
  })(jQuery);
  </code></pre>
  
  <p>vs.</p>
  
  <pre><code>(function($){
  
  ...
  
  })($);
  </code></pre>
  
  <p>Note the jQuery was replaced with a $. Is this ok? Is it not used anywhere because it can't work? It works but maybe it is non-standard? Can someone please explain this if it is an error or if it is ok?
  Thanks</p>