this question is to basic. do you want to know what they do or what you do to get results? ------------------ I wish there was a button on my monitor to turn up the intellegince. Theres a button called 'brightness' but it doesn't work
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."