declare variable $where as xs:string := string($fileTree/@filePath);
<html>
<head>
<title>All cpp files in: {$where}</title>
</head>
<body>
<p>
cpp-files found in {$where} sorted by size:
</p>
<ul> {
for $file in $fileTree//file[@suffix = "cpp"]
order by xs:integer($file/@size)
return
<li>
{string($file/@fileName)}, size: {string($file/@size)}
</li>
} </ul>
</body>
</html>