The Event Log Monitor Trigger allows adTempus to monitor the Event Log on the host computer and trigger jobs when selected events are logged.
For example, you could have a job that is run whenever a failed logon attempt is reported by the operating system, or a job that is run whenever SQL Server reports a replication error.
Each time adTempus is started, it reviews any events that were logged while it was stopped, and triggers based on those events as appropriate. It then begins watching for new events and triggering based on them.