It is not supposed to work in perl -> it is just a markup for the code that the user reads. It is the same as doing something like this:

  # Fill in user details.
  $user->set('name',  'joe');
  $user->set('tel',   '01234567');
  ...
  $user->set('email', 'joe@test.com');
[download]

The '...' will not compile - it is just there to represent more stuff. The '\' at the end of a line means 'don't wrap here'.