[ZDP] BackTalk to Document The Zope Book (2.5 Edition)/Searching and Categorizing Content

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A comment to the paragraph below was recently added via http://www.zope.org/Documentation/Books/ZopeBook/current/SearchingZCatalog.stx#3-92

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      For example::

        # big or shiny
        results=Catalog(categories=['big, 'shiny'])

        # big and shiny
        results=Catalog(categories={'query':['big','shiny'], 
                                             'operator':'and'})

        % Anonymous User - Aug. 7, 2002 7:50 am:
         how is this related with the input form, for example? More example needed.

        % Anonymous User - Jan. 14, 2003 6:48 am:
         and what about ???
         ((categorires = A or B) AND name = C) or
          (categories = C or name = D)

         etc, etc, etc..
         and NOR, XOR...