pfsense - setting up Bind

hi,

i have pfsense atm as a DNS forwarder but im going to disable that and enable Bind as my DNS server but a few questions i need to ask before hand - 

listen-on, i imagine i want to click "listen on all interfaces/ip addresses"

enable notify, what does this mean?

hide version?

and i imagine the rest of the defaults i can leave alone

thanks

rob