This type is used in the TIdSysLogMessage.Severity property to indicate the severity of the SysLogMessage. It can be one of the following values and associated meanings:
slEmergency - Emergency, system unusable.
slAlert - Alert: action must be taken immediately.
slCritical - Critical: critical conditions.
slError - Error: error conditions.
slWarning - Warning: warning conditions.
slNotice - Notice: normal but signification condition.