[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#2-55

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    The *var* tag can call methods, but it also inserts the return
    value. Using the *call* tag you can call methods without inserting
    their return value into the output.  This is useful if you are
    more interested in the effect of calling a method rather than its
    return value.

      % Anonymous User - Sep. 24, 2002 5:05 pm:
       The *side effect*