case "$MODE" in
    commandline)
        add_option "update-dev" "`eval_gettext "add a development mirror"`" "advanced" "true"
        ;;
    configure)
        if [ -n "$option_update_dev_value" ]; then
            UPDATE_DEV="$option_update_dev_value"
        fi
        ;;
    after-install)
    if [ "$UPDATE_DEV_MOUNT" != "" ]; then
        echo "$UPDATE_DEV_MOUNT" >> "$ROOT/etc/apt/sources.list"
    fi    
    ;;
esac
