Library /sys$common/syshlp/helplib.hlb  —  RTL Routines, LIB$  LIB$RESERVE_EF, Argument
 event-flag-number

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

    Event flag number to be allocated by LIB$RESERVE_EF. The event-
    flag-number argument contains the address of a signed longword
    integer that is this event flag number.
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