I’ve been looking at how to use the SPCriticalTraceCounter class for outputting messages in the Developer Dashboard. I came across a good post about how to do this by Frode Aarebrot, but it left me puzzled – what was the traceLevel integer about? Why wasn’t it an enumeration – like the Microsoft.SharePoint.Administration.TraceSeverity enum? Why those magic values? What happened if I used a wrong value?