1.3.3 Printing Notation
Many of the examples in this manual print text when they are evaluated. In this manual the printed text resulting from an example is indicated by ‘-|’. The value that is returned by evaluating the expression is displayed with ‘⇒’ (1
in the next example) and follows on a separate line.
printf ("foo %s\n", "bar") -| foo bar ⇒ 1
© 1996–2020 John W. Eaton
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https://octave.org/doc/v6.3.0/Printing-Notation.html