diff --git a/atc/atc.6.in b/atc/atc.6.in
index c3b2b83..ceeff64 100644
--- a/atc/atc.6.in
+++ b/atc/atc.6.in
@@ -384,6 +384,10 @@ Planes enter at 7000 feet and leave at 9000 feet.
 Planes flying at an altitude of 0 crash if they are not over an airport.
 .It
 Planes waiting at airports can only be told to take off (climb in altitude).
+.It
+Pressing return (that is, entering an empty command) will perform the
+next update immediately. This allows you to ``fast forward''
+the game clock if nothing interesting is happening.
 .El
 .Sh NEW GAMES
 The
diff --git a/debian/postinst b/debian/postinst
index eed5d95..f03764e 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -46,7 +46,7 @@ if [ ! -e /var/games/bsdgames/phantasia/monsters ] ; then
 fi
 
 touch $SCOREFILES
-chown root.games $SCOREFILES
+chown root:games $SCOREFILES
 chmod 664 $SCOREFILES
 
 # These files may not be world-readable as they have passwords
@@ -56,7 +56,7 @@ chmod 660 /var/games/bsdgames/phantasia/characs
 # I have to make this directory here, because older version of this package
 # always deleted it in their postrm. Oops.
 mkdir -p /var/games/bsdgames/sail
-chown root.games /var/games/bsdgames/sail
+chown root:games /var/games/bsdgames/sail
 chmod g+rws /var/games/bsdgames/sail
 
 #DEBHELPER#
diff --git a/debian/preinst b/debian/preinst
index 389f480..a7b3c38 100644
--- a/debian/preinst
+++ b/debian/preinst
@@ -25,7 +25,7 @@ if [ -d /var/lib/games ]; then
 	# Have to set up directory hierarchy, since this is running as a
 	# preinst.
 	mkdir -p /var/games/bsdgames/phantasia
-	chown root.games /var/games/bsdgames \
+	chown root:games /var/games/bsdgames \
 		/var/games/bsdgames/phantasia
 	chmod g+rws /var/games/bsdgames \
 		/var/games/bsdgames/phantasia
diff --git a/debian/rules b/debian/rules
index d5106bd..382685f 100755
--- a/debian/rules
+++ b/debian/rules
@@ -63,7 +63,7 @@ binary-arch: build
 
 	chmod -R u+rw debian/bsdgames/usr/
 	# Games with score files need to be set up sgid games.
-	chown root.games debian/bsdgames/usr/games/atc \
+	chown root:games debian/bsdgames/usr/games/atc \
 		debian/bsdgames/usr/games/battlestar \
 		debian/bsdgames/usr/games/canfield \
 		debian/bsdgames/usr/games/cribbage \
@@ -85,7 +85,7 @@ binary-arch: build
 		debian/bsdgames/usr/games/hack
 	# The game directories need to be sgid too, and let's
 	# remove all the zero byte score files in them.
-	chown root.games debian/bsdgames/var/games/bsdgames/ \
+	chown root:games debian/bsdgames/var/games/bsdgames/ \
 		debian/bsdgames/var/games/bsdgames/sail \
 		debian/bsdgames/var/games/bsdgames/phantasia \
 		debian/bsdgames/var/games/bsdgames/hack \