Duration
Quantity: Duration (use <a href="http://en.wikipedia.org/wiki/ISO_8601">ISO 8601 duration format</a>).
Duration
Quantity: Duration (use <a href="http://en.wikipedia.org/wiki/ISO_8601">ISO 8601 duration format</a>).
type
comment
Quantity: Duration (use <a hre ...... ISO 8601 duration format</a>).