Bind9 Options Clause
From: https://www.zytrax.com/books/dns/ch7/options.html





7. Options Clause
The options clause group together statements that have global scope - the 
statemnts apply to all zones or views unless overridden by the same statement in
a view or zone clause. Only one options clause should be defined in a named.conf
file. The options clause can take a serious list of statements. Full list of 
statements.



options Clause Syntax options { // statements };