disableChannels doesn't disable global?

[Heaney]

So I have in my mission

disableChannels[]={0,1,2,3,4,5,6};

And this seems to disable everything except for group and GLOBAL.

Now I was aware that group can't be disabled, for valid reasons, but why can't global be disabled?

0 = global does it not?

EDIT: Nevermind. It's only for those logged in as admin!

[Dwarden]

you can't disable Group, MOTD and Admin and BE admin messages are whitelisted