## Supporting a Layout
-For a keyboard to support a layout, the variable (`[a-z0-9_]`) must be defined in it's `<keyboard>.h`, and match the number of arguments/keys (and preferably the physical layout):
+For a keyboard to support a layout, the variable must be defined in it's `<keyboard>.h`, and match the number of arguments/keys (and preferably the physical layout):
#define LAYOUT_60_ansi KEYMAP_ANSI
+The name of the layout must match this regex: `[a-z0-9_]+`
+
The folder name must be added to the keyboard's `rules.mk`:
LAYOUTS = 60_ansi
## Tips for Making Layouts Keyboard-Agnostic
+### Includes
+
Instead of using `#include "planck.h"`, you can use this line to include whatever `<keyboard>.h` (`<folder>.h` should not be included here) file that is being compiled:
#include QMK_KEYBOARD_H
```
Note that the names are lowercase and match the folder/file names for the keyboard/revision exactly.
+
+### Keymaps
+
+In order to support both split and non-split keyboards with the same layout, you need to use the keyboard agnostic `LAYOUT_<layout name>` macro in your keymap. For instance, in order for a Let's Split and Planck to share the same layout file, you need to use `LAYOUT_ortho_4x12` instead of `LAYOUT_planck_grid` or just `{}` for a C array.