The per-system configuration file, /etc/saf/_sysconfig, is delivered empty. You can use it to customize the environment for all services on the system by writing a command script in the interpreted language. This language is described in this chapter and on the doconfig(3NSL) man page. When the SAC is started, it calls the doconfig() function to interpret the per-system configuration script. The SAC is started when the system enters multiuser mode.