A way to observe commands and responses

Is there some "switch" (e.g. a command line option) that would log the commands sent by the SSDR UI to the FlexLIb Api and vice versa?

I'm looking through the C# FlexLIb API and trying to understand how it is used by the SSDR UI. Without access to the source for the UI it's a bit of a mystery at times. It would be helpful to see a log of the activity.

I suppose I could recompile FlexLIb API and add logging into it but I'm guessing that it might already exist (in some undocumented dark corner).

Thanks