Signals START Signals the commencement of a service execution. > STOP Signals the completion of a service execution. > CALL Signals the calling of a service by another service. > SUCCEED Signals the success of a service execution or call. > FAIL Signals a failed service execution or call. > RECOURSE Signals the use of a fallback mechanism by a service. > ELAPSE Signals the timing out of a service execution or call. > RETRY Signals the retrying of a service execution or call. > REJECT Signals the rejection of a service execution or call. > DROP Signals the dropping of a service execution or call. > DELAY Signals the delaying of a service execution or call. > REDIRECT Signals the redirection of a service execution or call. > SCHEDULE Signals the scheduling of a service execution or call. > SUSPEND Signals the suspension of a service execution or call. > RESUME Signals a resumption of a service execution or call. > DISCONNECT Signals the disconnection to a dependent service. >