title: Scrum stories and behind the scenes features
body: <p>As I understand things, the Scrum backlog is composed of a series of Stories that represent something for the end user and this is further decomposed into Features.</p>
  
  <p>If this is the case, where does all the behind the scenes features go that aren't really linked to a story but are still useful?</p>
  
  <p>For example, say I'm making an application that catalogs the contents of a hard drive. A story wouldn't require it but having an md5 hash on each file would be a nice feature for flagging duplicates.</p>