> ...what is called 'clamping' in SytemTracer is literally same what is
 > called swapMap in SystemTracer2 - there are same thechnique behind it:
 > replace one oop with another during tracing.

      It's also used to omit objects entirely. This is a clearly 
critical feature, since you usually want to include objects created 
during the trace.

      At any rate, I still claim that the hard (and interesting) part of 
this problem is deciding which objects you want to put in the new image, 
and you haven't addressed that at all.


-C