Changes and comments added by Jeffrey.

[jeffreyfultonca]

Hey Steven,

I looked over your code, made some changes and added a bunch of comments. Feel free to review, merge, discard, ignore, whatever.

I really like the direction you're going in with this stuff. Good work.

ps. Thanks for introducing me to the clock() function. I hadn't seen that before.

[jstheoriginal]

I had no clue about clock as well!