I had no idea that printing something like "\x1b[2J\x1b[H" can clear the screen - with a bit of googling I found out that this is not that unusual a command, bu

I had no idea that printing something like "\x1b[2J\x1b[H" can clear the screen - with a bit of googling I found out that this is not that unusual a command, but it still took a little reading to figure it out! [1] Looks like the rest of the code is for generating the donut. Quite a bit of math involved - too much for a sunday morning to look into and attempt to decipher! [1] http://www.codeguru.com/forum/archive/index.php/t-311110.html http://www.codeguru.com/forum/archive/index.php/t-311110.htm... explains it quite well: Those are so-called ANSI terminal escape sequences - there is a whole list of them. Hex 1B is the escape character, the characters after that determine the action (clearing the screen, changin text color, moving the cursor etc.) Well, and "[2J" is the sequence for clearing the screen.