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

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A comment to the paragraph below was recently added via http://zope.org/Documentation/Books/ZopeBook/2_6Edition/Sessions.stx#1-0

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  Sessions allow you to keep state between HTTP requests for site
  users, making implementing things like "shopping carts" and other
  applications which must maintain ad-hoc state related to a site
  visitor for some period of time greater than a single request.
  Zopes 2.5.0 and greater have built-in sessioning machinery, which is
  described in this chapter.

    % Anonymous User - Apr. 20, 2004 5:23 am:
     不是很懂！