The following example declares NUMVARIABLES to be a switch list identifier and associates four list designators with it. NUMVARIABLES[0] evaluates to the list NOVARS, NUMVARIABLES[1] evaluates to ONEVAR, and so on.
SWITCH LIST NUMVARIABLES := NOVARS, % 0
ONEVAR, % 1
TWOVARS, % 2
THREEVARS % 3
