Built-in log4net appenders
                In addition to the Qlik Sense custom appender, QSRollingFileAppender, the log4net framework comes with a set of built-in predefined appenders that also can be used in the local log configuration file, LocalLogConfig.xml:
- AdoNetAppender
 - AnsiColorTerminalAppender
 - AspNetTraceAppender
 - ColoredConsoleAppender
 - ConsoleAppender
 - EventLogAppender
 - FileAppender
 - NetSendAppender
 - RemoteSyslogAppender
 - RemotingAppender
 - RollingFileAppender
 - SmtpAppender
 - SmtpPickupDirAppender
 - TelnetAppender
 - UdpAppender
 
Each appender has its own set of parameters to control the output.