
   <a href="#section-1">1</a>. Introduction...................................................<a href="#page-2">2</a>
   <a href="#section-2">2</a>. Terminology....................................................<a href="#page-3">3</a>
   <a href="#section-3">3</a>. Storage model..................................................<a href="#page-3">3</a>
   <a href="#section-4">4</a>. Requests.......................................................<a href="#page-4">4</a>
   <a href="#section-5">5</a>. Response