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# bcat's Lily58 layout

This split ergo layout is standard QWERTY on the default layer, with symbols on
the lower layer, numbers/navigation on the raise layer, and media keys centered
around the ESDF cluster in the adjust (raise + lower) layer. A few general
principles went into this layout:

* The number row is optional, as are the outermost bottom row keys and the
"extra" keys on the innnermost columns below the controllers. This allows me to
switch between this keyboard and a 40% like the
[Crkbd](https://github.com/qmk/qmk_firmware/tree/master/keyboards/lily58/keymaps/bcat)
without breaking muscle memory.

* Space and Enter are on the big thumb keys so they're easy to press.

* There are two shift keys because Right Shift is all that important, but just
because I don't have any better ideas for what to put there.

* Arrow keys are on VIM-style HJKL keys.

* Home/End and Page Up/Page Down are equivalent to the arrow keys, but
translated down one row.

* Navigation is usable with just the right hand, to enable left-handed mousing
at the same time. Additionally, Web page scrolling (Space, Shift+Space) is
possible with just the left hand, for writing at the same time as scrolling.

* Escape is easy to reach because Vim is life.

* Since most of the modifiers are on the left half, keys frequently pressed
together with mods (e.g., numbers, function keys, etc.) are on the Raise layer
activated by the right thumb.

* Every key on a TKL has a binding.

* Backspace is bound in the same place on every layer to avoid having to let go
of layer-shift keys to fix a mistake.

* Likewise, the comma and period keys are not rebound on the raise layer to
allow typing numbers with thousand separators and decimal points without
releasing the layer key.

* Brackets and braces are on or near the home row for quick access when coding.
They're positioned below the parens on the Raise layer for easy recall.

* For consistency, mods aren't rebound on layers (except for the Tab key).

## Default layer

![Default layer layout](https://i.imgur.com/wx1brJV.png)

([KLE](http://www.keyboard-layout-editor.com/#/gists/e0eb3af65961e9fd612dcff3ddd88e4f))

## Lower layer

![Lower layer layout](https://i.imgur.com/6ms2ll7.png)

([KLE](http://www.keyboard-layout-editor.com/#/gists/19ad0d3b5d745fbb2818db09740f5a11))

## Raise layer

![Raise layer layout](https://i.imgur.com/HBowZ0w.png)

([KLE](http://www.keyboard-layout-editor.com/#/gists/912be7955f781cdaf692cc4d4c0b5823))

## Adjust layer

![Adjust layer layout](https://i.imgur.com/udhzfON.png)

([KLE](http://www.keyboard-layout-editor.com/#/gists/8f6a3f08350a9bbe1d414b22bca4e6c7))