XML/XQuery/comments

XML comment constructors

File: Data.xml

<order>
  <car model="A">
    <id>0001</id>
    <name language="en">name 1</name>
  </car>
  <car model="B">
    <id>0002</id>
    <name language="en">name 2</name>
  </car>
  <car model="B">
    <id>0003</id>
    <name language="en">name 3</name>
  </car>
</order>
File: Query.xquery
let $count := count(doc("Data.xml")//car)
return <ul>
         {comment{concat(" List of ", $count, " cars ")}}
       </ul>

Output:
<?xml version="1.0" encoding="UTF-8"?>
<ul><!-- List of 3 cars --></ul>