Documentation : layout

Different layouts are included by modifying a variable in the makefile.

To write a new one:

You must implement everything defined in [layout.h] (layout.h). Take a look at existing layouts in the 'layout' subdir.
- Currently, see [qwerty.c] (layout/qwerty.c) and [qwerty.h] (layout/qwerty.h). The latter is only important if you want more than one layer. And I still need to write the functions to make that possible (though that shouldn't be hard, I just haven't gotten to it yet). But (at least for the QWERTY and Dvorak layouts I'd really like to include) if you indicate it clealy in the layout, and provide complete initializations for kb_layout[][][], kb_layout_press[][][], and kb_layout_release[][][], I'll make sure it gets working.
The number of layers must be defined in the layout *.h file.
Use 0 for no-operation (unused) keys, and NULL for no-operation (unused) functions.
See [matrix.md] (matrix.md) for how the key matrix maps to hardware.
See [keyboard-usage-page--short-names.h] (../../lib/_usb/keyboard-usage-page--short-names.h) for available keycodes.
See [key-functions.c] (../../lib/_key-functions.c) for what functions keys can call.
See [_defaults.h] (layout/_defaults.h) for default function layers and aliases.

notes

Each full layer takes 420 bytes of memory, wherever it's stored. (The matrix size is 12x7, keycodes are 1 byte each, and function pointers are 2 bytes each.)