[Zope] Prototype Help, Please

[yuba@cyberback.com]

I am trying to get the Prototype in the Zope Book working and run into the following problem when typing in the index_html file (Listing 4=2E1)=2E  Here is the cod=
e
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<dtml-var standard_html_header>
  <center>=20
    <dtml-if "AUTHENTICATED_USER=2Ehas_role('Anonymous')">
      <h3>Welcome to your Message Board</h3><p>
      Please identify!    <p>
      <a href=3D"login_html">Login</a>
    </dtml-if>
</center>
<dtml-var standard_html_footer>
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and here is the error:

Compilation failed
TAL=2EHTMLParser=2EHTMLParseError: malformed start tag, at line 3, column 14

I have looked and looked, but do not see what I've done wrong=2E  Can you help me, please=
?

Thanks,
Greg Lindstrom
Vilonia, Arkansas