Figure 3   Pass by Reference


<html>
<head>
<title>Fly Fast Airlines</title>
</head>
<body>
• • •
<a href="/scripts/buyticket.asp?sessionid=012345678">Purchase Ticket</a>
• • •
<form action="/scripts/findfare.asp">
<input type=hidden name=sesionid value=012345678>
• • •
</form>
• • •
</body>
</html>