-for(my $mfn = 1; $mfn <= $isis->count; $mfn++) {
- print STDERR Dumper($isis->to_hash($mfn)),"\n" if ($debug);
+my $min = 1;
+my $max = $isis->count;
+$max = $opt{n} if ($opt{n});
+
+for my $mfn ($min .. $max) {
+ print STDERR Dumper($isis->to_hash($mfn)),"\n" if ($opt{'d'});