sub setup {
    my $self = shift;
    $self->start_mode('mode1');
    $self->mode_param('rm');
    $self->error_mode('sub_fehler');
    $self->run_modes(
        'mode1' => 'sub_a',
        'mode2' => 'sub_b',
        'mode3' => 'sub_c',
        );
}