Events -- Events are actions, routines, behaviors, and value changes in your application that you want to record in order to determine exactly what occurs when your application is running. Events are recorded using the TimeTrac recording functions, which store data for each occurrence of an event. These event records are stored in a buffer until they are written to a trace file, which can be displayed by the TimeTrac viewer. All events recorded during a particular trace session are included in the trace file.