Error Pages

T
he site is quite tolerant of errors, such as mistyping a URL or entering invalid data into a form. However, occasionally errors do occur. In these cases, the server sends a response that looks like this: 
HTTP/1.0 404 Not Found
Date: Mon, 16 Jul 2001 19:35:13 GMT
Server: Apache/1.3.14 (Unix) mod_python/2.7.1 Python/2.0 PHP/4.0.4
Connection: close
Content-Type: text/html; charset=iso-8859-1
 
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<HTML><HEAD>
...

The response looks similar to the normal web page response, but the number and message in the first line are different. This number tells browsers and caches that this is not a normal, cacheable page.