Those are things that trip up many logging solutions.

>I guess in our case since we're re-writting VFP code and we're used to logging, we use a Logging class that adds strings to the local file.
>
>The call to this method looks like this
>
>Logging.Log(3, "Some string"); where the first parameter is verbosity level (so, if the verbosity level is 1, then nothing gets logged).
>
>I haven't looked closely into the actual implementation of that class, but it's used in many of our applications.