The SysConfig is the place where many configuration options for OTRS are stored.
The "SysConfig" link in the admin area of OTRS loads the graphical configuration front-end. You can upload own config files for the system and backup all your current settings into a file. Almost all config parameters of the OTRS framework and the installed applications can be viewed and changed through the web interface. Because all config parameters are sorted into groups and sub groups it is possible to navigate quickly through the multitude of the parameters. Also it is possible to perform a full-text search through all the config parameters.
In the chapter "Configuring the system through the web interface" the graphical configuration front-end is described in more detail.