The Library in the Hub delivers your content through delivery interfaces appropriate to the type of content being delivered.

• The browser-style interface is used for text-based technique or tutorial content.
  
  
• There's a special interface that lets content provider add notes to a video tutorial while it's playing - for extra bits of information, or they can use a video only display for video interviews and video presentations.

See a movie about this (QuickTime 6 required)

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