The format for the configuration file (config.inc.php) is very simple. A line starting with a "#" character is considered a comment and is ignored.
Each setting has an indication for "Required" or "Optional".
Required values must be filled in order to make the program work.
Optional values can be left blank or commented. The default value is indicated.
Note that multiple instances of the same configuration setting overwrite the
previous one. So the latest is the one taken into consideration.