This is (probably) the answer in question: http://superuser.com/a/419167 http://superuser.com/a/419167. It was edited (not by me, just to be clear) to fix some

This is (probably) the answer in question: http://superuser.com/a/419167 http://superuser.com/a/419167. It was edited (not by me, just to be clear) to fix some minor typos, not for content. Here is the diff: http://superuser.com/posts/419167/revisions http://superuser.com/posts/419167/revisions. I guess having "hz" edited into "Hz" might strike some people as being "anal", but I think it's a very decent improvement. Of course, I'm not trying to imply anything about Mr Carmack's knowledge about unit symbols, I just think he wrote his answer too quickly to care. I consider it a feature that someone else can step in and clean it up a bit.