docs/150736: [handbook] ipfw docs: rule number is optional, not mandatory

[Bruce Cran]

>Number:         150736
>Category:       docs
>Synopsis:       [handbook] ipfw docs: rule number is optional, not mandatory
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-doc
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Sep 19 19:20:01 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Bruce Cran
>Release:        N/A
>Organization:
>Environment:
N/A
>Description:
In http://www.freebsd.org/doc/handbook/firewalls-ipfw.html section 30.6.5.1.2 says that the rule number is mandatory:

Each rule has to have a rule number to go with it.

The rule number is actually optional.

Also, in 30.6.5 "TCP/IP" is shown as an acrynym but the title is empty: 

Each <acronym class="ACRONYM" title="">TCP/IP</acronym> service
>How-To-Repeat:
Visit http://www.freebsd.org/doc/handbook/firewalls-ipfw.html
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: