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What happend if an already specified event is specified again?

"More specified" than a specified event is not possible. If a KS_setEvent selected again, eventually the already selected event still persists (1x). The reaction to that depends on, whether the event is a "auto reset" (default) or a "manual reset" ( by KSF_MANUAL_RESET at KS_createEvent) event. At a "auto reset" event at most one waiting thread is released and in the case of the release, the event is subsequently reset automatically. A "manual reset" event remains as long as it is reset by KS_resetEvent. Thus, it is also possible to release several waiting threads. The "manual reset" event is like a gate, which after specification let pass any number of threads until the gate is closed again.