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Date: Fri, 21 Mar 2008 09:55:02 -0400
From: Eduardo Cerejo <ejcerejo@optonline.net>
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Subject: FreeBSD compatiblity
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FreeBSD 7 stable

If you have these options in your kernel:

options 	COMPAT_FREEBSD4		# Compatible with FreeBSD4
options 	COMPAT_FREEBSD5		# Compatible with FreeBSD5
options 	COMPAT_FREEBSD6		# Compatible with FreeBSD6

you don't need to enable them in /etc/rc.conf, am I correct?