W3C home > Mailing lists > Public > www-validator@w3.org > October 2003

Why isn't this valid?

From: Benjamen R. Meyer <benjamen_r_meyer@mail15.com>
Date: Fri, 10 Oct 2003 01:22:52 -0400
To: <www-validator@w3.org>
Message-ID: <000201c38eee$8d8a0820$905e96ac@mshome.net>

Could someone explain to me why the errors below occur when using the HTML
validator? I don't understand the need for the start tags, or why the header
tags should be invalid in their location.

Please cc me if replying to list as I am not subscribed. (If I have many
more questions, then I might subscribe.)

Thank you!

Sincerely,

Benjamen R. Meyer

Below are the results of attempting to parse this document with an SGML
parser.

Line 42, column 12: document type does not allow element "H1" here; missing
one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag
           <h1>The OS Project</h1>
              ^
Line 43, column 12: document type does not allow element "H2" here; missing
one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag
           <h2>Revolutionizing Computer Operating Systems</h2>
              ^
Source Listing
Below is the source input I used for this validation:

   1: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
   2: <html>
   3:  <head>
   4:   <meta http-equiv="Content-Type" content="text/html;
charset=US-ASCII">
   5:   <title>The OS Project: Winux</title>
   6:  </head>
   7:  <body bgcolor="#00BFFF">
   8:   <!-- Create the banner -->
   9:   <table border="0" width="100%">
  10:    <tr><td width="100%" bgcolor="#FFFFFF">
  11:     <IMG SRC="./graphics/tosp_logo.png" alt="TOSP Logo">
  12:    </td></tr>
  13:   </table>
  14:   <table width="100%">
  15:    <tr><td>
  16:     <table border="0" width="10%" bgcolor="#FFFFFF">
  17:      <tr><td><a href="./index.html">Home</A></td></tr>
  18:      <tr><td><hr></td></tr>
  19:      <tr><td><A href="./faq.html">FAQ</A></td></tr>
  20:      <tr><td><a href="./license.html">License</A></td></tr>
  21:      <tr><td><a href="./mailing.html">Mailing Lists</A></td></tr>
  22:      <tr><td><a href="./news.html">News</A></td></tr>
  23:      <tr><td width="100%"><a
href="./Requirements/">Requirements</A></td></tr>
  24:      <tr><td><hr></td></tr>
  25:      <tr><td width="100%"><a
href="./Downloads/">Downloads</A></td></tr>
  26:      <tr><td width="100%"><a href="./tools.html">Tools</A></td></tr>
  27:      <tr><td><hr></td></tr>
  28:      <tr><td width="100%"><a
href="./resources.html">Resources</A></td></tr>
  29:      <tr><td width="100%"><a href="./Unofficial_Docs/">Unofficial
Document Repository</A></td></tr>
  30:     </table>
  31:    </td>
  32:    <td>
  33:     <table width="100%" bgcolor="#00BFFF"><tr><td>
  34:      <!-- Put main page here! -->
  35:       2003-10:  Well, I've finally updated the webpage for the
project. Our web team never
  36: 	around to producing a webpage, and I needed to do something for the
project, so here
  37: 	we are.  If there are any problems or if you would like to help out
by keeping the
  38: 	website up to date, then please e-mail me at <a
href="mailto:shounin@users.sourceforge.net">shounin@users.sourceforge.net</a
>.<BR>
  39:        <hr>
  40:        <center>
  41:         <font color="#004FFF">
  42:          <h1>The OS Project</h1>
  43:          <h2>Revolutionizing Computer Operating Systems</h2>
  44:         </font>
  45:        </center>
  46:        The OS Project is designed to produce a product we are calling
'Winux'. The goal is to
  47: 	make an operating system that is fully compatible with Microsoft
Windows (but without
  48: 	all the problems), maintaining a similarly well-designed interface,
and fully open
  49: 	source.  The name Winux comes from "Windows" + "Linux", and is, at
least for now, only
  50: 	a codename. I do not know what the final product will actually be
called. For more
  51: 	information, please visit the FAQ, News, and Requirements pages on
this site.
  52:      <!-- End main page here -->
  53:     </td></tr></table>
  54:    </td></tr>
  55:   </table>
  56:   <a href="http://sourceforge.net">
  57: <!-- This is simply to do development off-line. Restore this link
before making public. -->
  58:    <img src="http://sourceforge.net/sflogo.php?group_id=46266"
width="210" height="62" border="0" alt="SourceForge Logo" align="left">
  59: <!--
  60:    <img src="./graphics/sf_logo.gif" width="210" height="62"
border="0" alt="SourceForge Logo" align="left">
  61: -->
  62:   </a>
  63:   <address>
  64:    This site hosted by <a
href="http://sourceforge.net">SourceForge.net</a> All rights reserved(r).
  65:   </address>
  66:  </body>
  67: </html>
Received on Friday, 10 October 2003 01:34:08 GMT

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