diff --git a/README.md b/README.md
index e3eca32..1bc2e41 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,19 @@ sudo dnf -y install gcc g++ make m4 bison byacc patch texinfo
 bash version-check.sh
 ```
 
-edit vars.sh to set the desired parallel JOBS for compiling
+edit vars.sh and change the following options to suit the desired needs:
+
+- JOBS: parallel threads used for compiling packages
+- PAPERSIZE: the default paper size used by the groff package
+- NETWORKINTERFACE: the name of the hosts network interface which will be
+  configured with dhcp
+- HOSTNAME: the hostname of the system which will be used for the network
+  configuration
+- DOMAIN: the domain name which will be used for the network configuration
+- KEYMAP: the keboard layout which will be set
+- LOCALE: the system locale which will be set
+- TELNETD: if the telnet server service is desired to be installed
+  if not, set this option to anything but TRUE
 
 proceed with the LFS chapters:
 
diff --git a/vars.sh b/vars.sh
index afab2ae..37825a2 100644
--- a/vars.sh
+++ b/vars.sh
@@ -3,13 +3,13 @@
 export JOBS="4"
 export MAKEFLAGS="-j$JOBS"
 export NINJAJOBS=$JOBS
-export TELNETD=TRUE
 export PAPERSIZE="A4"
 export NETWORKINTERFACE="enp11s0"
 export HOSTNAME="lfs"
 export DOMAIN="fritz.box"
 export KEYMAP="de-latin1"
 export LOCALE="en_US.utf8"
+export TELNETD=TRUE
 
 export LFS="/mnt/lfs"