-# name of debootstrap executable
-# supported values: debootstrap cdebootstrap
-DEBOOTSTRAP='debootstrap'
-
-# Which debconf-frontend should be used?
-DEBIAN_FRONTEND='noninteractive'
-
-# The single steps/stages of grml-deboostrap are stored inside /etc/debootstrap/stages
-# by default. Use another directory instead?
-# STAGES='/etc/debootstrap/stages'
-
-# install packages defined in /etc/debootstrap/packages?
-PACKAGES='yes'
-
-# install extra packages (.deb) from /etc/debootstrap/extrapackages/?
-EXTRAPACKAGES='yes'
-
-# place of config files for debootstrap
-CONFFILES='/etc/debootstrap/'
-
-# mount point where chroot actions should take place
-MNTPOINT='/mnt/test'
-
-# executable which should be run on $TARGET
-# unset it if you do not want to use it
-MKFS='mkfs.ext3'
-
-# deactivate automatic filesystem check on $TARGET?
-# unset it if you do not want to use it
-TUNE2FS='tune2fs -c0 -i0'
-
-# check filesystem when chroot stuff finished?
-FSCK='yes'
-
-# which tool should be used for fsck? if unset the tool will be guesst based on $MKFS
+# Name of debootstrap executable.
+# Supported values: 'debootstrap', 'cdebootstrap'
+# Default: 'debootstrap'
+# DEBOOTSTRAP='debootstrap'
+
+# Pass extra options to debootstrap.
+# Default: no default.
+# Usage example:
+# DEBOOTSTRAP_OPT='--include=debconf-utils,locales,pciutils --exclude=nano,tasksel,tasksel-data,iptables'
+
+# debconf-frontend that should be used.
+# Default: 'noninteractive'
+# DEBIAN_FRONTEND='noninteractive'
+
+# Pass extra options to aptitude/apt-get.
+# Default: no default.
+# DPKG_OPTIONS='-o APT::Get::AllowUnauthenticated=true -o aptitude::Cmdline::ignore-trust-violations=yes'
+
+# Use custom grml-debootstrap stages.
+# Specify path to your custom grml-debootstrap stages.
+# Default: '/var/cache/grml-debootstrap'
+# STAGES='/var/cache/grml-debootstrap'
+
+# Install packages defined in /etc/debootstrap/packages.
+# Default: 'yes'
+# PACKAGES='no'
+
+# Pre-seed DebConf questions from /etc/debootstrap/debconf-selections.
+# Default: 'yes' (if file exists)
+# DEBCONF='no'
+
+# Run scripts from /etc/debootstrap/pre-scripts/ before creating the chroot.
+# Default: 'yes'
+# PRE_SCRIPTS='no'
+
+# Run scripts from /etc/debootstrap/chroot-scripts/ inside chroot.
+# Default: 'yes'
+# CHROOT_SCRIPTS='no'
+
+# Run scripts from /etc/debootstrap/post-scripts/ after setting up chroot.
+# Default: 'yes'
+# POST_SCRIPTS='no'
+
+# Install *.deb packages from /etc/debootstrap/extrapackages/
+# Default: 'yes'
+# EXTRAPACKAGES='no'
+
+# Location of config files for debootstrap.
+# Default: '/etc/debootstrap'
+# CONFFILES='/etc/debootstrap'
+
+# Mount point to use during installation.
+# Default: no default.
+# MNTPOINT='/mnt/debootstrap'
+
+# File system creation tool to apply on $TARGET.
+# If empty, no file system will be created.
+# Default: 'mkfs.ext4'
+# MKFS=''
+
+# Command line options for file system creation tool.
+# Default: no default.
+# MKFS_OPTS=''
+
+# Filesystem tuning tool to apply on $TARGET.
+# If empty, the created file system will not be tuned.
+# Default: 'tune2fs -c0 -i0' if ext* filesystem is used, no default otherwise.
+# TUNE2FS='tune2fs -c0 -i0'
+
+# Check file system after installation is finished.
+# Default: 'no'
+# FSCK='yes'
+
+# File system checking tool to apply on $TARGET.
+# Default: guessed.