This doesn't appear to be the correct answer. The provided information details how to log your own events.
How do you enable tracing on built in SiteFinity events.
Example is there is a TraceManager defined in Telerik.Sitefinity.Security.Claims.SWT, it has a trace source name of "Telerik.Sitefinity.Security.Claims.SWT".
How do we turn on logging so that all those events are written to a log file?
Currently they are not being logged for some reason.
Is there a setting in the Sitefinity backend / administration area to turn it on?