line is added to the message; if you want one, include it in the text using &amp;#xa;,
as in the example below.</p>

<p>Example: This example displays an error message.</p>
 
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    &lt;xsl:template match="BOOK"&gt;
        &lt;xsl:if test="not(@AUTHOR)"&gt;
            &lt;xsl:message&gtError: BOOK found with no AUTHOR!&amp;#xa;&lt;/xsl:messa