# 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>

![](https://1282083284-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5A2PNyzG80QTDoltbtvZ%2Fuploads%2Fgit-blob-ed0e1d85e74de51d4b251e63929a2e1b367a747b%2F546813660178284565.webp?alt=media): joke for an eternal release date on all switch projects\
![](https://1282083284-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5A2PNyzG80QTDoltbtvZ%2Fuploads%2Fgit-blob-3015a11473b255f84405d5baaa2e7d3298dd7f3a%2F819819086217216020.webp?alt=media): used when user (particularly azkali) needs to sleep\
![](https://1282083284-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5A2PNyzG80QTDoltbtvZ%2Fuploads%2Fgit-blob-c505ee3691224d4ee9f0e334cad7ef731c6cb312%2F925226910408146985.webp?alt=media): emoji used to show CTCaer approves this message\
![](https://1282083284-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5A2PNyzG80QTDoltbtvZ%2Fuploads%2Fgit-blob-cbf8a0d54d8dd0ca9dd4f3746d797792987823c5%2F927376721194418186.webp?alt=media): you pinged a user who was already present... avoid doing that