# Simple EFI Library (SEL) > [!NOTE] > Although this library is fairly complete for most programmers' needs, a rewrite is currently taking place to in the `rewrite` branch. Definitions and names will stay the same, though. ## Usage Simply put `#include "efi.h"` into your source code and you're good to go. `efilib.h` provides additional functionality, but is not required for it to be included. ## Contributing PRs are welcome for fixing spelling or formatting mistakes, otherwise open an issue. ## License Simple EFI Library is licensed under the MIT license, which you can find [here](LICENSE.txt).