VMS Help  —  RTL Routines, LIB$  LIB$GET_EF, Argument
 event-flag-number

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

    Number of the local event flag that LIB$GET_EF allocated, or -
    1 if no local event flag was available. The event-flag-number
    argument is the address of a signed longword integer into which
    LIB$GET_EF writes the number of the local event flag that it
    allocates.
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