[users@httpd] disable htaccess files

[Marc Fromm]

I switched from using htaccess files to <Directory> directives.
Other than deleting my old htaccess files what else can I do to sop/prevent 
htaccess files?
Should I add " AllowOverride None" to each directory directive that I created 
in httpd.conf or is there a "global" setting in httpd.conf?

Thanks

Marc