$hlist->header('create', 0, -text => 'user');
$hlist->header('create', 1, -text => 'gid');
$hlist->header('create', 2, -text => 'pid');
$hlist->header('create', 3, -text => 'machine');
$hlist->header('create', 4, -text => 'service');
$hlist->header('create', 5, -text => 'ip-adres');
$hlist->header('create', 6, -text => 'logon time');

##</code><code>##

my $option = 0;
foreach (qw(user gid pid machine service ip-adres logon)) {
    $hlist->header('create', $option++, -text => $_);
}