The set of severity levels that can be applied to log events and loggers.
|LL_DEFAULT||-1||If a logger is set to this level, then the severity level of its parent log will be used.|
|LL_TRACE||0||The lowest severity level. Use this for detailed context dumps, and within loops.|
|LL_DEBUG||1||The second lowest severity level. Use this for events which will be useful when debugging.|
|LL_INFO||2||Use this to record user input or commands, or for significant events.|
|LL_WARN||3||The lowest error level. Warnings are worth recording for later analysis, but do not require immediate action.|
|LL_ERROR||4||An error condition occurred, but the application can continue.|
|LL_FATAL||5||A fatal error occurred, and the application or module must cease operation.|