BIND statement layout variations

BIND is very picky about opening and closing brackets/braces, semicolons and all the other separators defined in the formal statement syntax. The literature contains various ways to layout statements. The variations, while they may be confusing, are simply attempts by the authors to minimise the potential for errors, they have no other significance. Use any method you feel comfortable with. The following zone clause layouts are all equivalent and acceptable to BIND.

// dense single line
zone "example.com" {type slave; file "slave.example.com"; masters {10.0.0.1;};};
// lots of lines 
zone "example.com" {
   type slave; 
   file "slave.example.com"; 
   masters {10.0.0.1;};
   };
// spot the difference
zone "example.com" {
   type slave; 
   file "slave.example.com"; 
   masters {10.0.0.1;}; };