signal-arguments

    OpenVMS usage:vector_longword_unsigned
    type:         unspecified
    access:       read only
    mechanism:    by reference, array reference

    Signal argument vector. The signal-arguments argument is the
    address of an array of unsigned longwords containing the signal
    argument vector.

 mechanism-arguments

    OpenVMS usage:vector_longword_unsigned
    type:         unspecified
    access:       read only
    mechanism:    by reference, array reference

    Mechanism argument vector. The mechanism-arguments argument is
    the address of an array of unsigned longwords containing the
    mechanism argument vector.

 new-operand

    OpenVMS usage:floating-point
    type:         F_floating
    access:       read only
    mechanism:    by reference

    An F-floating value to replace the reserved operand. The
    new-operand argument is the address of an F-floating number
    containing the new operand. This is an optional argument. If
    omitted, the default value is +0.0.