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My Corne keyboard layout.

Runusevia.app and loadlayout.json. You can also use theofficial site.

The layout is based on the following heuristics:

• Keys should resemble the original qwerty layout to avoid muscle memory conflicts with traditional keyboards.
• Mnemonics, like vim-based ones, should be used to minimize cognitive load.
• Modifier and layer keys should mainly reside in the thumb clusters to prevent awkward key combinations.
• The most used keys for each layer should reside in the home row.
• Four layers should be more than enough.

The first layer mostly resembles qwerty.

• Space is the only non-modifier key in the thumb cluster. As it is used all the time, it must reside in layer 0 and in a handy spot. Since the home row is taken by qwerty, this is the next logical choice.
• The external thumb and pinky keys are used to access further layers. I believe these to be a good fit considering their positions as outliers.
• On the left ofa we haveEsc instead ofCAPS, a remap that many vim users also have on normal keyboards.
• I have no key forCAPS. If necessary, I keepShift pressed while typing letters.
• Since my workflow requires me to press bothAlt +Shift andAlt +Ctrl, I putAlt on the opposite side of the other two modifiers.
• The first layer key is positioned in the thumb cluster opposite toShift as layer 1 contains keys that might require shifting.

Shortcomings:

• Enter is in an awkward position. However, I did not find it worth it to haveEnter readily accessible as a thumb key like I did forSpace. Moreover, havingEnter as a thumb key would result in significant muscle memory conflicts against traditional keyboards. In the end, I got used to this lower-right pinky position and it currently does not bother me.
• Since no more space is left in the thumb clusters, the second layer key is positioned on the bottom left and must reached with the left pinky. This reduces mobility of the other left fingers.

The second layer is for numbers and symbols. You can access it by pressing the left external thumb key.

• Numbers in the home row are very handy and I prefer them to having them at the top row like I have seen in some layouts.
• You can easily pressShift with your right thumb to access all the available symbols.
• [ and] are just above( and).
• Pass-through still gives you access to useful keys likeEnter and number-related symbols like..
• \ is positioned opposite to/.

Shortcomings:

• ; is the only symbol key not accessible in this layer, as it is shadowed by0. I thought of positioning0 somewhere else, but unfortunately that would make( and) no longer near eachother.
• The position of- and= does not really match the original qwerty layout.

The third layer is for navigation and function keys. You can access it by pressing the bottom left pinky key.

• The arrow keys are positioned to resemble vim arrow keys.
• Since it is unlikely for symbols to be useful in this layer, we do not pass through those.
• Home andEnd mirror the behavior of the shadowedBackspace andEnter.
• PgDown andPgUp are positioned to resemble vim'sn andp.
• Since the left pinky is already being used to access the layer, we position the most used function keys (1 to 4) on the right side of the keyboard for ease of access.

Shortcomings:

• The position of the function keys is not as straightforward as that of numbers.
• Function keys from 5 onwards are awkward to type, as the left pinky is already pressing on the bottom-left key to access the layer. This is why they start from the ring finger and we avoid positioning them in the top row.

The fourth layer is for media control. You can access it by pressing both layer keys.

• Vol- andVol+ are positioned to resemble vim arrow keys.
• Next andPrev are positioned to resemble vim'sn andp.
• Rewind andPlay mirror the behavior of the shadowedBackspace andEnter.