Understandingproblem within firewallscript

[Ruprecht Helms <rhelms@xxxxxxx>]

Hi,

I've difficulties in understanding a part within a examplescript. For
what is the last part used in these lines.

iptables -N SPECIALPORTS

iptables -A SPECIALPORT -p tcp --dport 6670 -j LSPECIALPORT
...

I found nothing before were LSPECIALPORT is defined. The rule
works within the chain SPECIALPORT   I know.

Thanks for help.

Regards,
Ruprecht