From the doc: 'This is a fun little program you can use to play a prank on your best friends or your worst enemies alike. It is so realistic, even people who have formatted their hard drives can't recognize it as fake(I should know). It even makes disk sounds!! To run the program, put it on a disk and go to your friend's computer. Slip in the disk, type 'a:flsified' or 'b:flsified'. When that's done high-tail it! Stay in the next room so as you can hear your friend moan and pound his head. But, when it's all over, you had better run so that YOU won't get pounded.'