Library /sys$common/syshlp/helplib.hlb  —  RTL Routines, LIB$  LIB$GET_EF
    The Get Event Flag routine allocates one local event flag from
    a processwide pool and returns the number of the allocated flag
    to the caller. If no flags are available, LIB$GET_EF returns an
    error as its function value.

    Format

      LIB$GET_EF  event-flag-number
Additional Information: explode extract
Returns Argument
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