Settings object key.
For details see Settings automatically saved in the system storage.
Key of settings to be saved.
Default value: Empty string.
Name of the user whose settings are to be saved.
If it is not specified, settings of the current user are saved.
If user, which is not current, is specified, i.e. when attempting to call the settings which do not belong to the current user, then the DataAdministration right is required for the current user.