The following reply was made to PR docs/144537; it has been noted by GNATS.
From: Garrett Cooper <yane...@gmail.com>
To: bug-...@FreeBSD.org, unav...@trash-mail.net
Subject: Re: docs/144537: Missing _mdconfig_list and _mdconfig2_list
explanation in rc.conf(5)
Date: Mon, 2 Jan 2012 04:02:15 -0800
Please refer to conf/122477 for a patch that does what you want.