update db-iris(1)

db-iris is an interface to the DeutscheBahn departure monitor

available at L<https://iris.noncd.db.de/wbt/js/index.html>.

It requests all departures at I<station> and lists them on stdout, similar to

the big departure screens installed at most main stations. I<station> can be

a DS100 station code (such as "EE"), a normal station name

(such as "Essen Hbf" or "Dortmund UniversitE<auml>t"), or an IBNR / european station

number (such as 8000098). If no exact match is found, B<db-iris> will try to

find station names similar to I<station>.

An exclamation mark (C<< ! >>) next to a destination indicates that at least

one stop on the train's route has been canceled. Use B<-oc> to see the canceled

stops.  An exclamation mark next to a platform indicates that it is not the

scheduled one.

It requests all trains departing from (or arriving at) I<station> in the next

two hours and lists them on stdout.  I<station> can be a DS100 station code

(such as "EE"), a normal station name (such as "Essen Hbf" or "Dortmund

UniversitE<auml>t"), or an IBNR / european station number (such as 8000098). If

no exact match is found, B<db-iris> will try to find station names similar to

I<station>.

By default, db-iris shows the following data for each train:

=over

=item * scheduled departure time (see also B<-ot>, B<-r>).

=item * delay in minutes, cancellation, or a question mark (C<< ? >>)

indicating that no real-time data is available.

=item * train line or number.

=item * destination (see also B<-or>). An exclamation mark (C<< ! >>)

indicates that at least one stop has been cancelled (see B<-oc>).

=item * platform. An exclamation mark (C<< ! >>) indicates that it is not

the scheduled one.

=back

=head1 OPTIONS

=item B<-l>, B<--lookahead> I<int>

Do not return results which are more than I<int> minutes in the future.

Defaults to 240 (4 hours).

Defaults to 120 (2 hours).

Note that this is only an upper limit, not a guarantee to get every train

with a departure in less than I<int> minutes. This guarantee holds only for