! from https://www.youtube.com/watch?v=W9_H_M-H-a4
! https://unix.stackexchange.com/a/151046
!
! The .Xmodmap file will be loaded in when you open X11 sessions,
! you should have this mapping in place next time you login or reboot.
!
! change Caps Lock to Hyper key
!
! to load xmodmap config:
! $ xmodmap ~/.Xmodmap
!
! to reset the keyboard to default:
! $ setxkbmap -layout hu    # or "en" if you have an English keyboard

! unmap Caps Lock
clear Lock
keycode 66 = Hyper_L

! leave mod4 as windows key _only_
remove mod4 = Hyper_L

! set mod3 to Caps Lock
add mod3 = Hyper_L