User settings configuration
The user settings module determines what user settings are available for backend users. The users can access the settings by clicking on their name in the top bar and then "User settings".
A number of settings such as backend language, password etc. are available by default. These settings may be extended via extensions as described in Extending the user settings.
The User Settings module has the most complex form in the TYPO3 backend
not driven by TCA/TCEforms. Instead it uses its own PHP configuration
array $GLOBALS. It is quite similar to
$GLOBALS['TCA'], but with less options.
The actual values can be accessed via the array $GLOBALS
as described in Get User Configuration Value.
This functionality is provided by the typo3/ Composer package.
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