post_remove() {
  echo "You may safely delete the '~/.sqrxz2' directory containing the config/highscore"
  echo "files, if you do not want to preserve them."

  # leftover files from old behaviour
  if [ -d opt/sqrxz2 ]; then
    echo "You may also safely delete /opt/sqrxz2 and it's contents."
  fi
}