1) the token 'to' names the values in the result,

e.g. I end up with this in the expanded array of hashes:

  to => 'auckland',
[download]

2) also, this is just an example, in reality there are more values, e.g.

  period => {
    20050824 => {
      to        => [ 'auckland', 'new york', ],
      transport => [ 'air', ]
    },
  },
[download]