doc that rdate can do SNTP as well

src/etc/rc.conf

@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$OpenBSD: rc.conf,v 1.75 2002/07/09 16:55:33 deraadt Exp $
+#	$OpenBSD: rc.conf,v 1.76 2002/07/11 08:14:54 deraadt Exp $
 
 # set these to "NO" to turn them off.  otherwise, they're used as flags
 routed_flags=NO		# for normal use: "-q"
@@ -14,7 +14,7 @@ sshd_flags=""		# for normal use: ""
 smtpfwdd_flags=NO	# for normal use: ""; be sure to configure smtpd(8)
 			# and sendmail(8) to use MSA only
 named_flags=NO		# for normal use: ""
-rdate_flags=NO		# for normal use: name of RFC868 timeserver
+rdate_flags=NO		# for normal use: [RFC868-host] or [-n RFC1361-host]
 timed_flags=NO		# for normal use: ""
 ntpdate_flags=NO	# for normal use: NTP server; run before ntpd starts
 photurisd_flags=NO	# for normal use: ""