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(texinfo)Print Glyph

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`@print{}' (-|): Indicating Printed Output
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  Sometimes an expression will print output during its execution.  You
can indicate the printed output with the `@print{}' command.

  The `@print{}' command is displayed as `-|' in Info and similarly, as
a horizontal dash butting against a vertical bar, in the printed output.

  In the following example, the printed text is indicated with `-|',
and the value of the expression follows on the last line.

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

In a Texinfo source file, this example is written as follows:

     @lisp
     (progn (print 'foo) (print 'bar))
          @print{} foo
          @print{} bar
          @result{} bar
     @end lisp