It's best to **make a copy of the original Xonotic directory first** in case you wanna go back to using the release but you can also go back by using the `update-to-release` scripts. Releases and autobuilds should be able to coexist (they will share the same [config](https://www.xonotic.org/faq/#config) though, unless you use something like `-userdir`).
Autobuilds (and [git builds](Repository_Access)) are compatible with the same servers as the latest release. When you connect to a server, Xonotic downloads the gamelogic from it (and runs it sandboxed) so you always use the same version as the server. Autobuilds therefore "only" affect the gamelogic of local or hosted games, the engine (rendering, input, ...), assets (models, sounds, ...), menu, config and scripts.
+
+## rsync updater options
+
+| Environment variable | cmdline long | cmdline short | Description |
+| - | - | - | - |
+| `XONOTIC_INCLUDE_ALL=true` | `--include-all` | `-a` | By default, files for other platforms than yours are excluded. |
+| `choice=y` | `--yes` | `-y` | Acknowledges that any custom files will be DELETED (disables the prompt). |