[] means optional but 'add' or 'insert' is not optional one of them is required
which is usually signed with {} braces.
Signed-off-by: Máté Eckl <ecklm94@gmail.com>
Acked-by: Duncan Roe <duncan_roe@optusnet.com.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
RULES
-----
[verse]
-[add | insert] *rule* ['family'] 'table' 'chain' [ {handle | position} 'handle' | index 'index' ] 'statement'...
+{add | insert} *rule* ['family'] 'table' 'chain' [ {handle | position} 'handle' | index 'index' ] 'statement'...
replace *rule* ['family'] 'table' 'chain' handle 'handle' 'statement'...
delete *rule* ['family'] 'table' 'chain' handle 'handle'