This file holds the current system name ("UNIX", "Windows", "Macintosh", "DOS", "OS2", "Amiga", "VMS" and so on). To see the full list of systems currently supported by SmallEiffel, put a bad system name in system.se and then run, for example, se-compile.
When the system name is correctly set in system.se, SmallEiffel does some automatic customisation. For example, if system.se contains the string "DOS", SmallEiffel uses the suffix ".BAT" for script files and the suffix ".EXE" for executables.
On a Debian system, system.se should contain the string UNIX.