The argument to SETUP is a file name where setup information can be found. A setup file must be specified. See Section 3.6 for details of what should be in the setup files. A new setup file can be specified for each scan for mode switching. The SETUP file name may refer to an external file that can be read by SCHED or it may refer to a setup imbedded in the main SCHED input following a SETINIT command, whose argument is the setup file name.
Under unix, environment variables may be used. For example, if SCHED is defined to mean /users/cwalker/sched, the base area under which all sched stuff is kept (substitute your local directory), then one can specify the setup file with SETUP = $SCHED/setups/v6cm-128-4-2.set. Use the setenv (c or t shell) or export (korn shell) to set environment variables.
Since SETUP can be a file name and some operating systems (unix, Linux) are case sensitive, SETUP must be treated as case sensitive, including when refering to an embedded setup (from SETINIT).