title: How do I create an importable module in Swift?
body: <p>I have read through Apple's documentation for Swift and can find nothing about how to create modules or how to define class or stucture members as private or public. </p>
  
  <p>There are references to the import statement in the syntax but I can find no information on what it does or how to use it.</p>
  
  <p>Does anyone know where I can find this?</p>