Hidden Input
On the surface, having inputs that the user cannot see may seem sort of pointless, but it actually is a very powerful tool in HTML and CGI programming.
Using hidden fields allows you to pass information to your CGI script which you need, but the reader does not have to see. More importantly- it can be data you do not want the reader to be able to change.
The Code
NAME is the variable or container that the VALUE will be sent to the server in.
VALUE is what you want the NAME to be equal to.