[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#2-55

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    As of Zope 2.3, none of the "out-of-the-box" Zope objects support
    automatic cataloging.  This is for backwards compatibility reasons.
    For now, you have to define your own kind of objects that can be
    cataloged automatically.  One of the ways this can be done is by
    defining a *ZClass*.

      % Anonymous User - Sep. 27, 2002 7:54 pm:
       Read this book from start on. dunno "ZClass". explain. blf