Review and apply recommended configuration presets based on the detected environment setup.

TYPO3 can also run in a specific application context defined through an environment variable in the web server configuration. This context can be accessed in system/additional.php or in TypoScript to customize configuration accordingly.

Changed values are written to system/settings.php. The optional file system/additional.php is not managed by the TYPO3 core and may override certain settings. Administrators must maintain this file manually and should use it with caution.