To send a coded message: Type a Key into the field above the Wheel Cipher and press "Set Key." The Key determines the order of the wheels, which are numbered. The key can be any string of letters but is most often a memorable phrase. You can hit the "Set Random Key" button to let the cipher create a randomized key for you. Type your message into the Cipher by choosing the first highlighted red letter and simply typing across the cipher from wheel to wheel. You can also adjust each wheel with your mouse. Rotate the Wheel Cipher to highlight a new, enciphered row using the "All Up" or "All Down" buttons. Hit the "Send E-mail" button, fill out the form in the pop-up window, and hit "Send."