VMS Help RTL Routines, LIB$, LIB$MATCH_COND, Arguments  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 match-condition-value

    OpenVMS usage:cond_value
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference

    Condition value to be matched. The match-condition-value argument
    is the address of an unsigned longword that contains this
    condition value.

 compare-condition-value

    OpenVMS usage:cond_value
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference

    The condition values to be compared to match-condition-value.
    The compare-condition-value arguments are the addresses of the
    unsigned longwords that contain these condition values.