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    copied!<p>You don't need to do anything fancy like recursion. And good lord, don't even contemplate using CDATA. </p> <p>You just have to think like XSLT and ask: "What input element do I want to transform into my output element?"</p> <p>Assuming that each <code>ul</code> is supposed to contain N <code>item</code>s, you want to transform every Nth input <code>item</code>, starting with the first, into a <code>ul</code>:</p> <pre><code>&lt;xsl:variable name="n" select="number(4)"/&gt; &lt;xsl:template match="/"&gt; &lt;output&gt; &lt;xsl:apply-templates select="/root/item[position() mod $n = 1]"/&gt; &lt;/output&gt; &lt;/xsl:template&gt; </code></pre> <p>Each of these <code>item</code> elements becomes a <code>ul</code> that contains the item and each of its N-1 following siblings:</p> <pre><code>&lt;xsl:template match="item"&gt; &lt;ul&gt; &lt;xsl:for-each select=". | following-sibling::item[position() &amp;lt; $n]"&gt; &lt;li&gt; &lt;xsl:value-of select="."/&gt; &lt;/li&gt; &lt;/xsl:for-each&gt; &lt;/ul&gt; &lt;/xsl:template&gt; </code></pre> <p>Assuming an input document like this:</p> <pre><code>&lt;root&gt; &lt;item&gt;1&lt;/item&gt; &lt;item&gt;2&lt;/item&gt; &lt;item&gt;3&lt;/item&gt; &lt;item&gt;4&lt;/item&gt; &lt;item&gt;5&lt;/item&gt; &lt;item&gt;6&lt;/item&gt; &lt;item&gt;7&lt;/item&gt; &lt;item&gt;8&lt;/item&gt; &lt;item&gt;9&lt;/item&gt; &lt;/root&gt; </code></pre> <p>...you get this output, if <code>$n</code> is set to 4:</p> <pre><code>&lt;output&gt; &lt;ul&gt; &lt;li&gt;1&lt;/li&gt; &lt;li&gt;2&lt;/li&gt; &lt;li&gt;3&lt;/li&gt; &lt;li&gt;4&lt;/li&gt; &lt;/ul&gt; &lt;ul&gt; &lt;li&gt;5&lt;/li&gt; &lt;li&gt;6&lt;/li&gt; &lt;li&gt;7&lt;/li&gt; &lt;li&gt;8&lt;/li&gt; &lt;/ul&gt; &lt;ul&gt; &lt;li&gt;9&lt;/li&gt; &lt;/ul&gt; &lt;/output&gt; </code></pre>
 

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