Listing 1: HTML file that generated form in Figure 1
<TITLE>Fill-Out Form Example for Ordering Pizza </TITLE> <H1>Fill-Out Form Example for Ordering Pizza </H1> <HR> <FORM METHOD="POST" ACTION="/cgi-bin/form.cgi"> Type in your street address: <INPUT name="ADDRESS"> <P> Type in your phone number: <INPUT name="PHONE"> <P> Which toppings would you like? <P> <OL> <LI> <INPUT TYPE="checkbox" name="TOPPING" VALUE="pepperoni" CHECKED> Pepperoni. <LI> <INPUT TYPE="checkbox" name="TOPPING" VALUE="sausage" CHECKED> Sausage. <LI> <INPUT TYPE="checkbox" name="TOPPING" VALUE="anchovies"> Anchovies. </OL> How would you like to pay? Choose any one of the following: <P> <OL> <LI> <INPUT TYPE="radio" name="PAYMETHOD" VALUE="cash" CHECKED> Cash. <LI> <INPUT TYPE="radio" name="PAYMETHOD" VALUE="check"> Check. <LI> <I>Credit card:</I> <UL> <LI> <INPUT TYPE="radio" name="PAYMETHOD" VALUE="mastercard"> Mastercard. <LI> <INPUT TYPE="radio" name="PAYMETHOD" VALUE="visa"> Visa. <LI> <INPUT TYPE="radio" name="PAYMETHOD" VALUE="americanexpress"> American Express. </UL> </OL> Would you like the driver to call before leaving the store? <P> <DL> <DD> <INPUT TYPE="radio" name="CALLFIRST" VALUE="yes" CHECKED> <I>Yes.</I> <DD> <INPUT TYPE="radio" name="CALLFIRST" VALUE="no"> <I>No.</I> </DL> To order your pizza, press this button: <INPUT TYPE="submit" VALUE="Order Pizza">. <P> </FORM>