R-Car/Boards/Yocto-Gen3-CommonFAQ/How to use x11 instead of wayland on R-Car Gen3 Starter Kit

How to use x11 instead of wayland on R-Car Gen3 Starter Kit
ex.) Yocto 3.21.0
 * After step 9 of "R-Car/Boards/Yocto-Gen3/v3.21.0", refer to the followings.

Case using core-image-sato:
 * 1) bitbake core-image-sato

Case using core-image-x11:
 * 1) Add following lines to local.conf
 * DISTRO_FEATURES_append = " x11"
 * 1) bitbake core-image-x11
 * 2) After booting yocto, matchbox-window-manager starts automatically.

ex.) using twm instead of matchbox
 * 1) Add following lines to local.conf
 * 2) bitbake core-image-x11
 * 3) After booting yocto, execute command "killall matchbox-window-manager; startx" to run twm.
 * 1) After booting yocto, execute command "killall matchbox-window-manager; startx" to run twm.