Look at the following xml document, and let us discuss some corresponding xslt possibilities:
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="browsere.xsl"?>
<products>
<item kat="browser" type="O">HotJava</item>
<item kat="browser" type="P">Internet Explorer</item>
<item kat="browser" type="O">Midori</item>
<item kat="browser" type="O">Minimo</item>
<item kat="browser" type="P">Epiphany</item>
<item kat="browser" type="O">Flock</item>
<item kat="browser" type="P">Opera</item>
<item kat="browser" type="P">Safari</item>
<item kat="browser" type="P">Seamonkey</item>
<item kat="browser" type="P">Konqueror</item>
<item kat="browser" type="O">Lobo</item>
<item kat="browser" type="O">3B</item>
<item kat="browser" type="O">Arora</item>
<item kat="browser" type="O">Shiira</item>
<item kat="browser" type="P">Chrome</item>
<item kat="browser" type="O">DeepFish</item>
<item kat="browser" type="O">Doris</item>
<item kat="browser" type="P">Firefox</item>
<item kat="browser" type="O">Sleipnir</item>
<item kat="browser" type="O">Slim Browser</item>
<item kat="browser" type="O">Space Time 3D</item>
<item kat="browser" type="O">Browse 3D</item>
<item kat="browser" type="O">Madfox</item>
<item kat="browser" type="O">Maxthon</item>
<item kat="browser" type="O">Swift</item>
<item kat="browser" type="O">Voyager</item>
<item kat="browser" type="O">xB Browser</item>
</products><?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
xmlns="http://www.w3.org/1999/xhtml">
<xsl:output doctype-system="about:legacy-compat"
indent="yes"
method="xml"
omit-xml-declaration="no"/>
<xsl:template match="products">
<html xml:lang="da">
<head>
<title>Test</title>
<meta charset="utf-8"/>
</head>
<body>
<h1>Products, ordered list</h1>
<ol>
<xsl:apply-templates/>
</ol>
</body>
</html>
</xsl:template>
<xsl:template match="item">
<li><xsl:apply-templates/></li>
</xsl:template>
<xsl:template match="name"/>
</xsl:stylesheet><?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
xmlns="http://www.w3.org/1999/xhtml">
<xsl:output doctype-system="about:legacy-compat"
indent="yes"
method="xml"
omit-xml-declaration="no"/>
<xsl:template match="products">
<html>
<head>
<title>Test</title>
<meta charset="utf-8"/>
</head>
<body>
<h1>Products, alphabetically sorted</h1>
<xsl:apply-templates select="item">
<xsl:sort/> <!-- order descending: <xsl:sort order="descending"/> -->
<!-- order numerically: <xsl:sort select="@xxx" data-type="number"/> -->
</xsl:apply-templates>
</body>
</html>
</xsl:template>
<xsl:template match="item">
<p><xsl:apply-templates/></p>
</xsl:template>
</xsl:stylesheet><?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
xmlns="http://www.w3.org/1999/xhtml">
<xsl:output doctype-system="about:legacy-compat"
indent="yes"
method="xml"
omit-xml-declaration="no"/>
<xsl:template match="products">
<html>
<head>
<title>Test</title>
<meta charset="utf-8"/>
</head>
<body>
<h1>Products, numbered by xslt</h1>
<xsl:apply-templates select="item">
<xsl:sort/>
</xsl:apply-templates>
<p><i>Total number of items: <xsl:value-of select="count(item)"/></i></p>
</body>
</html>
</xsl:template>
<xsl:template match="item">
<p><xsl:number format="1. " value="position()"/><xsl:apply-templates/></p>
</xsl:template>
</xsl:stylesheet>