In that case, you'll be able to help administer the system and customize it for your needs.
"Debian GNU/Linux: Guide to Installation and Usage"
John Goerzen and Ossama Othman
A configuration file is defined as any file you might have edited in order to customize the program for your system or your preferences.
"Debian GNU/Linux: Guide to Installation and Usage"
John Goerzen and Ossama Othman