/sys$common/syshlp/helplib.hlb System Services, $SCHED, Arguments  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 func

    OpenVMS usage:function_code
    type:         longword (unsigned)
    access:       write only
    mechanism:    by value
    Function code specifying the action $SCHED is to perform. The
    func argument is a longword containing this code.

    Refer to the OpenVMS System Services Reference Manual for a list
    of the valid function codes for $SCHED.

 p1, p2, p3

    OpenVMS usage:longword
    type:         longword (unsigned)
    access:       varies
    mechanism:    varies
    The meaning of the p1, p2, and p3 arguments depends on the
    function code specified in the func argument, and is defined
    in the Function Codes section.