Corne layout files. Keymap editor at https://config.qmk.fm/#/crkbd/rev4_0/standard/LAYOUT_split_3x6_3_ex2

keymap.yml

# For https://keymap-drawer.streamlit.app/
layout: {qmk_keyboard: crkbd/rev4_0/standard, layout_name: LAYOUT_split_3x6_3_ex2}
layers:
  L0:
  - ESC
  - Q
  - W
  - E
  - R
  - T
  - LCTL
  - RGUI
  - Y
  - U
  - I
  - O
  - P
  - BSPC
  - TAB
  - A
  - S
  - D
  - F
  - G
  - LALT
  - RALT
  - H
  - J
  - K
  - L
  - ;
  - ''''
  - LSFT
  - Z
  - X
  - C
  - V
  - B
  - N
  - M
  - ','
  - .
  - /
  - ENT
  - LALT
  - L1
  - LGUI
  - {t: SPC, h: L2}
  - {t: BSPC, h: LCTL}
  - RSFT
  L1:
  - LCTL+Q
  - '!'
  - '@'
  - '#'
  - $
  - '%'
  - MPLY
  - ''
  - '7'
  - '8'
  - '9'
  - +
  - ''
  - ''
  - ''
  - ^
  - '&'
  - '*'
  - '-'
  - '='
  - MUTE
  - ''
  - '4'
  - '5'
  - '6'
  - _
  - ''
  - ''
  - ''
  - _
  - '~'
  - '`'
  - ''
  - ''
  - '1'
  - '2'
  - '3'
  - .
  - ''
  - ''
  - {t: ▽, type: trans}
  - {type: held}
  - {t: ▽, type: trans}
  - {t: ▽, type: trans}
  - '0'
  - {t: ▽, type: trans}
  L2:
  - ''
  - ''
  - ''
  - ''
  - ''
  - ''
  - ''
  - ''
  - Ctl+Sft+TAB
  - Ctl+TAB
  - Gui+LEFT
  - Gui+RGHT
  - ''
  - DEL
  - ''
  - ''
  - MS WHLL
  - MS WHLD
  - MS WHLU
  - MS WHLR
  - ''
  - ''
  - LEFT
  - DOWN
  - UP
  - RGHT
  - ''
  - ''
  - ''
  - ''
  - ''
  - ''
  - ''
  - ''
  - MS LEFT
  - MS DOWN
  - MS UP
  - MS RGHT
  - MS BTN1
  - MS BTN2
  - {t: ▽, type: trans}
  - {t: ▽, type: trans}
  - {t: ▽, type: trans}
  - {type: held}
  - {t: ▽, type: trans}
  - {t: ▽, type: trans}
  L3:
  - QK BOOT
  - F1
  - F2
  - F3
  - F4
  - F5
  - F6
  - F7
  - F8
  - F9
  - F10
  - F11
  - F12
  - ''
  - RGB TOG
  - RGB HUI
  - RGB SAI
  - RGB VAI
  - ''
  - ''
  - ''
  - ''
  - MUTE
  - VOLD
  - VOLU
  - ''
  - ''
  - ''
  - ''
  - RGB HUD
  - RGB SAD
  - RGB VAD
  - ''
  - ''
  - MPLY
  - MPRV
  - MNXT
  - MSTP
  - ''
  - ''
  - {t: ▽, type: trans}
  - {type: held}
  - {t: ▽, type: trans}
  - {type: held}
  - {t: ▽, type: trans}
  - {t: ▽, type: trans}
combos:
  - {l: [L0], tk: [J, K], k: ESC}
  - {l: [L0], tk: [';', "'"], k: '`'}
  - {l: [L0], tk: [L, ";"], k: '~'}
  - {l: [L0], tk: ['.', "/"], k: '\'}
  - {l: [L0], tk: ['/', ENT], k: '|'}
  - {l: [L0], tk: [P, BSPC], k: "LALT+BSPC"}
  - {l: [L0], tk: [R, T], k: (}
  - {l: [L0], tk: [F, G], k: '['}
  - {l: [L0], tk: [V, B], k: "{"}
  - {l: [L0], tk: [Y, U], k: )}
  - {l: [L0], tk: [H, J], k: ']'}
  - {l: [L0], tk: [N, M], k: '}'}