Override naming confusion

Hi,

In RT2 we used to override the LookupExternalUserInfo in the

config file. I read about RT3 doing it in a _Local file, but I
see things on Google with people putting in User_Local.pm . Shouldn’t
it go in EmailParser_Local.pm? And does it go into my $RT/etc/
directory or the $RT/lib/RT directory?

(FreeBSD ports install)

	Thanks, Tuc