[ZDP] BackTalk to Document The Zope Book (2.5 Edition)/Variables and Advanced DTML

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A comment to the paragraph below was recently added via http://www.zope.org/Documentation/Books/ZopeBook/current/AdvDTML.stx#2-98

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    This example will raise an exception if *the_easter_bunny* does not
    exist.

      % Anonymous User - Sep. 24, 2002 5:40 pm:
       The differentiation between dtml name attributes and expr attributes
       is smeared over chapter 4:
       http://www.zope.org/Documentation/Books/ZopeBook/current/DTML.stx