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(elisp)Printing Notation

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Printing Notation
-----------------

   Many of the examples in this manual print text when they are
evaluated.  If you execute example code in a Lisp Interaction buffer
(such as the buffer `*scratch*'), the printed text is inserted into the
buffer.  If you execute the example by other means (such as by
evaluating the function `eval-region'), the printed text is displayed
in the echo area.

   Examples in this manual indicate printed text with `-|',
irrespective of where that text goes.  The value returned by evaluating
the form (here `bar') follows on a separate line.

     (progn (print 'foo) (print 'bar))
          -| foo
          -| bar
          => bar