Having full root-level access signifies that you can access and modify each file on a selected server, including all system files, and to change system settings or set up server-side software which may be necessary for specific scripts and even offline apps to work properly. A server is accessed at the root level through a root user, which has full privileges to do any of the aforementioned tasks. The root user may also create various other users. For safety reasons, you are advised to have another account for routine tasks and to use the root account only if you actually need to perform a task on the server. The root-level access attribute will give you full control of your server from almost any location, as long as you have the user credentials.