---
title: "System settings: Module Admin Tools > Settings"
manual: "TYPO3 Explained"
version: "13.4"
permalink: "https://docs.typo3.org/permalink/t3coreapi:system-settings-module@13.4"
source: "Configuration/Modules/AdminToolsSettings/Index.rst"
rendered: "2026-10-05T17:28:20+00:00"
---

# System settings: Module Admin Tools > Settings {#system-settings-module}

Global configuration can only be changed by backend users with
[System Maintainer privileges](https://docs.typo3.org/permalink/t3coreapi:system-maintainer@13.4).

Use the backend module **Admin Tools > Settings** to access the
different configuration options:

![Backend module "Admin Tools > Settings" as seen by a system maintainer](../../../Images/ManualScreenshots/AdminTools/AdminToolsSettings.png)

Changes made in this module are written to file `config/system/settings.php`.
They can be overridden by configuration in file `config/system/additional.php`
in which case they cannot be changed from the TYPO3 Backend.