[ZDP] BackTalk to Document The Zope Book (2.5 Edition)/Using Zope Page Templates

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A comment to the paragraph below was recently added via http://www.zope.org/Documentation/Books/ZopeBook/current/ZPT.stx#2-49

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    The 'tal:attributes' statement replaces the 'src' attribute of the
    'img' tag with the value of 'item/icon'.  The
    'src="/misc_/OFSP/Folder_icon.gif"' attribute in the template acts
    as a placeholder.

      % Anonymous User - July 4, 2002 1:05 pm:
       But it also works if you omit the placeholder, at least on my Zope 2.5.1:

         <td><img tal:attributes="src foo/icon">
             <span tal:replace="foo/meta_type">Meta-Type</span></td>

       So is the 'src=...' placeholder redundant?  The above is rather unclear.

      % Anonymous User - July 11, 2002 4:00 pm:
       It works, but if click "Browse HTML source" you get an unloaded image...

      % Anonymous User - Sep. 22, 2002 6:34 am:
       /replaces the src attribute/replaces the value of the src attribute/

      % Anonymous User - Sep. 22, 2002 6:44 am:
       shouldnt this be "src foo/icon.absolute_url" ? the path of, not the image.