We tried, but could not find /doku.php?id=doku.php.faq:generalquestions:what_is_the_difference_between_citadel_and_citadel_ux&do=login§ok=5e47fbfb5f7534a158bf1c3adf15a1fa
But hey, you don't have to leave empty handed!
Here are some things you can try instead: