[ZDP] BackTalk to Document The Zope Book (2.6 Edition)/Advanced DTML

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A comment to the paragraph below was recently added via http://zope.org/Documentation/Books/ZopeBook/2_6Edition/AdvDTML.stx#2-102

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    The *unless* tag executes a block of code unless the given condition is
    true. The *unless* tag is the opposite of the *if* tag.  The DTML
    code::

      <dtml-if expr="not butter">
        I can't believe it's not butter.
      </dtml-if>

      % Anonymous User - Jan. 30, 2004 9:54 am:
       coucou