Inside the FORM tags you can include any of the usual HTML text, images, and so on. In addition, there are several tags for specifying form input fields. A text input field allows the user to enter a text string. When the form's data is sent to a CGI program, this NAME attribute is used to identify the field from which the data came. Usually you will want to have a unique name for each input field.
SIZE is the width in characters of the text input box to be displayed by the Web browser.
You'll want to try to keep these values reasonable for typical window sizes. Most browsers default to a width of about 70 characters. This can be larger than the SIZE of the box. Most browsers will scroll if the user types more characters than the box is wide. Use this in a case where there is a common value most people would supply.