> For the complete documentation index, see [llms.txt](https://docs.0resmon.org/0resmon/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.0resmon.org/0resmon/0resmon-1/s4-resources/s4-crosslab/installation.md).

# Installation

1. Drop the `s4-crosslab` folder into your resources directory.
2. Add `ensure s4-crosslab` to your `server.cfg` — make sure it loads after `ox_lib`.
3. That's it. No SQL imports, no additional setup.

The script saves each player's crosshair data as a JSON file inside the `data/` folder. These are created automatically on first save.

## Resource start order

```cfg
ensure ox_lib
ensure s4-crosslab
```

If you're using a framework like QBCore or ESX, CrossLab doesn't depend on either — but the training mode has optional weapon give/remove integration with both. That part is handled automatically through `Config.TemporaryWeapon` mode detection.

## Verify it's working

Once the server starts, join and press the key bound to `crosshair` (default: `F5`). The menu should open. If it doesn't, check the server console for errors — usually it's a missing `ox_lib` or a path issue.


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