diff --git a/README.install-20.04 b/README.install-20.04
index 1aa8041..5c5c8b3 100644
--- a/README.install-20.04
+++ b/README.install-20.04
@@ -15,25 +15,21 @@ ADMIN_EMAIL="agr@vvn-bda.de"
 # 1 Pre-installation checks
 # ===
 
+# see: https://docs.bigbluebutton.org/administration/install/#pre-installation-checks
 
 # ---
-# 1.) Run script bbb-pre-install.sh
+# Run script bbb-pre-install.sh
 # ---
 
-# check that the locale of the server is en_US.UTF-8.
+# The script does:
 #
-cat /etc/default/locale
+#     - installs missing debian packages
 
-
-# If you don't see LANG="en_US.UTF-8", enter the following commands to set the local to en_US.UTF-8.
+#     - checks the locale parameter and sets it to 'en_US.UTF-8' if necessary
 #
-apt-get install -y language-pack-en
-update-locale LANG=en_US.UTF-8
-
-
-# ---
-# More checks see: https://docs.bigbluebutton.org/administration/install/#pre-installation-checks
-# ---
+#     - Installs the latest version of Docker if necessary
+#
+/usr/local/src/bigbluebutton/bbb-pre-install.sh
 
 
 # ===
@@ -84,42 +80,6 @@ wget -qO- https://raw.githubusercontent.com/bigbluebutton/bbb-install/v2.7.x-rel
 wget -qO- https://ubuntu.bigbluebutton.org/bbb-install.sh | bash -s -- -v bionic-230 -s $FQDN_HOSTNAME -e $ADMIN_EMAIL  -a -w
 
 
-# You can test your BigBlueButton installation. Open
-#
-#    https://$FQDN_HOSTNAME
-# 
-# enter your name, and click 'Join' to join 'Demo Meeting'. The BigBlueButton client should 
-# launch in 'Demo Meeting'.
-
-
-# ---
-# 3.) Deinstall bbb-demo
-# ---
-
-# Warning: The API demos are installed and accessible from:
-#
-#    https://bbb.oopen.de
-#
-# and
-#
-#    https://bbb.oopen.de/demo/demo1.jsp
-#
-# These API demos allow anyone to access your server without authentication
-# to create/manage meetings and recordings. They are for testing purposes only.
-# If you are running a production system, remove them by running:
-#
-#    apt-get purge bbb-demo
-#
-apt purge bbb-demo
-
-
-# ---
-# 4.) Install Greenlight - Run script bbb-greenlight-install.sh
-# ---
-
-/usr/local/src/bigbluebutton/bbb-greenlight-install.sh
-
-
 # --
 # Installation finished
 # --
diff --git a/bbb-pre-install.sh b/bbb-pre-install.sh
index 0f5512c..cc5ca42 100755
--- a/bbb-pre-install.sh
+++ b/bbb-pre-install.sh
@@ -327,7 +327,6 @@ echo ""
 
 _error=false
 : > $log_file
-blank_line
 echononl "Check if needed packages are installed.."
 for _pkg in $NEEDED_DEBIAN_PACKAGES ; do
    if aptitude search "$_pkg" | grep " $_pkg " | grep -e "^i" >> "$log_file" 2>&1 ; then
@@ -488,8 +487,12 @@ else
 
 fi
 
+blank_line
+
 info "The settings in the \033[1etc/default/locale\033[m file are correct."
 
+blank_line
+
 
 echononl "Set system environment to 'en_US.UTF-8'.."
 if $(systemctl show-environment | grep -Eq "LANG=\"?en_US.UTF-8\"?") ; then
@@ -514,8 +517,6 @@ else
    fi
 fi
 
-blank_line
-
 
 
 # ---
@@ -524,14 +525,14 @@ blank_line
 
 echo ""
 echo -e "   \033[1m---\033[m"
-echo -e "   \033[32m\Install latest version of docker033[m"
+echo -e "   \033[32mInstall latest version of docker\033[m"
 echo -e "   \033[1m---\033[m"
 echo ""
 
 :> "$log_file"
 if ! $(grep -Eq "^\s*deb\s+.*https://download.docker.com/linux/ubuntu\s+$DIST_CODENAME\s+stable" /etc/apt/sources.list) \
    && ! $(grep -r -Eq "^\s*deb\s+.*https://download.docker.com/linux/ubuntu\s+$DIST_CODENAME\s+stable" /etc/apt/sources.list.d/*)
-then  
+then
    echononl "Add GPG key for official Docker repository.."
    curl -fsSL https://download.docker.com/linux/ubuntu/gpg 2> "$log_file" | apt-key add - >> "$log_file" 2>&1