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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. You should be aware that text displayed in
the echo area is truncated to a single line.
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