Pike's summary seems pretty spot on: What, why, and background. Right on. I really don't understand the reply in that thread, "what" doesn't matter because it'

Pike's summary seems pretty spot on: What, why, and background. Right on. I really don't understand the reply in that thread, "what" doesn't matter because it's in in the code. Of course it matters. The whole point is that you get your bearings from the comment text, and you only need to look at the code to see the details of the 'how'.