Feature which optionally times the performance of snippet evaluation

This feature optionally times the evaluation of snippets as discussed in this thread.

https://groups.google.com/forum/?fromgroups=#!topic/liftweb/yy8gxcjH_bs

I think this is worth writing up a quick wiki as its discoverability is zero and it is quite a useful feature (I used it to track down a performance problem in my app).  Where should I be submitting documentation to?

Cheers,

Noel