title: What is the documents directory (NSDocumentDirectory)?
body: <p>Can someone explain to me what the documents directory is on an iOS app and when to use it?</p>
  
  <p>Here is what I believe at present:</p>
  
  <p>To me, it seems to be a central folder where the user can store any files needed for the app.</p>
  
  <p>This would be a different location than where Core Data stores its data?</p>
  
  <p>It seems like each app gets its own documents directory.  </p>
  
  <p>I am free to create a subdirectory of the documents directory, like documents directory/images, or documents directory/videos?</p>