chrooted named folder owners

[scott <scott_(_at_)_sporticia_(_dot_)_com>]

hi

I just installed a new clean 3.4 i386 based box to handle DNS.   Just 
getting ready to create the DNS config files and I notice that not all 
the folders in /var/named are owned by named:named !

is this correct ? I'm running other 3.4 boxes fine like this, and I 
don't remember changing permissions/ownerships of any named folders, so 
I guess that's just how it installed, but I am curious as to why ther 
are these ownership and permission differences ?

drwxr-x---  /var/named/etc      root:named
drwxr-xr-x  /var/named/master   root:wheel
drwxrwxr-x  /var/named/slave    root:named


why does master have wheel group ?
why does slave have named group and the write permission ?

can anyone shed any light ?

thanks

_scott