• An instance administrator: what the server runs, what it costs, how long it keeps things, and the account lifecycle.
• Stored bytes nothing references any more can be deleted, and a password set by link.
• The browser writes a library's items out as a file, in any format, over the item list's own query.
• A rig that decides whether two clients and the server hold the same library.
• The interface gathered into drawn glyphs, with targets a finger can hit.