> For the complete documentation index, see [llms.txt](https://wiki.switchroot.org/wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.switchroot.org/wiki/documentation/terminology.md).

# Terminology

**Switchroot**: A group for open-source development on the Nintendo Switch, a Tegra X1-based game console

**L4S**: Linux4Switch, a subsidiary of Switchroot.

**L4T**: Linux 4 Tegra, Linux kernel for Tegra devices made by Nvidia.

**BSP**: board source package - contains necessary libraries and binaries (in this case for running linux/android on nvidia tegra devices)

**HOS**: Horizon OS, Nintendo Switch original/default firmware made by Nintendo.

[**AMS**](https://github.com/Atmosphere-NX/Atmosphere): Atmosphere, customized firmware for the Nintendo Switch.

[**Hekate**](https://github.com/CTCaer/hekate): Nintendo Switch's custom bootloader.

**Nyx**: Hekate's GUI.

#### Emoji Terminology <a href="#emoji-terminology" id="emoji-terminology"></a>

![](/files/z4XEVhSDWtqvAY23KxTJ): joke for an eternal release date on all switch projects\
![](/files/90oFgAn5WHlsd3S94F52): used when user (particularly azkali) needs to sleep\
![](/files/WolTfIk0SetyO2lDpRQ7): emoji used to show CTCaer approves this message\
![](/files/IJdJLzWa2YRIRpdiQoO7): you pinged a user who was already present... avoid doing that