[ccnet-user] Why two RollingFileAppender defined in ccservices.exe.config?

[Kriss]

Hi,

I'm wondering why ccservices.exe.config defines two RollingFileAppender for 
log4net? Namely 

   - <appender name="RollingFileAppender" 
   type="log4net.Appender.RollingFileAppender">
   - <appender name="TraceAppender" 
   type="log4net.Appender.RollingFileAppender" >

The content is 99% the same if I'm not wrong (except the mask, slightly 
different).