Cycloid is a program that draws curves known technically as hypocycloids and epicycloids. To put it more simply, you'll recognize them as the curved designs of a spirograph. As you can probably imagine, a spirograph is something that is much easier to use than it is to describe. I would guess that you will learn a lot more about this program by running it than you will by reading this manual. However, I will give you a brief description of all of the commands to help you as well as I can. Minimum Requirements: CGA, EGA or VGA.