This read-only enumerated object records the severity and start/end phase of a given log event, distinguishing an informational message, a warning, or a fatal condition, and whether that entry marks the start or end of the condition. An operator scans this field across the log to quickly filter for fatalStart events when triaging what actually needs attention versus routine informational entries. For example, seeing a warningStart followed later by a warningEnd for the same description confirms that particular condition was transient and has already cleared.