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<span id="Error-Messages-1"></span><h4 class="subsection">1.3.4 Error Messages</h4>
<span id="index-error-message-notation"></span>
<p>Some examples signal errors. This normally displays an error message
on your terminal. Error messages are shown on a line beginning with
<code>error:</code>.
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<pre class="example">fieldnames ([1, 2; 3, 4])
error: fieldnames: Invalid input argument
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