The graphical interface is an X11 client so requires an X11 server.
The user should get the file SLS.tgz appropriate for your system and install the system with the following commands.
$ tar xzvf SLS.tgz # unless done automatically by your system $ cd SLS $ ./INSTALL
The system is started by typing
./sls &Use the Quit button or the Quit command to exit SLS.
The directory SLS contains a Data directory were the specifications are stored.