>>-IPHDR--+-ip_header_address-+--+------+----------------------->
+-rcb_address-------+ +-size-+
+-tcb_address-------+ '-*----'
+-ucb_address-------+
+-skmb_address------+
+-skdb_address------+
'-*-----------------'
>--+--------------------------+--------------------------------><
| .-ALL------. |
'-HELP--(--+----------+--)-'
+-FUNCTION-+
+-OPERANDS-+
'-SYNTAX---'